JP2015134686A - Winding device, and print winding system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding device or the like which suppresses adverse effects on the feeding accuracy of a printing medium in a printing apparatus.SOLUTION: A winding device comprises: a winding shaft 205 which winds up roll paper S fed from a printing apparatus 100 having a feeding unit 115 for feeding the roll paper S; a power input unit 206 to which a power from the feeding unit 115 is input; a winding-side power transfer mechanism for transferring the power input to the power input unit 206 to the winding shaft 205; and a lever 208 which is movable between a first position P1 where the roll paper S feeding path starting from the printing apparatus 100 to the winding shaft 205 is bent, and a second position P2 where the feeding path is bent at a shallower angle than in the first position P1, and on which a force toward the first position P1 is acting.

Description

  The present invention relates to a winding device and a printing winding system that wind up a printing medium sent from a printing device.

  2. Description of the Related Art Conventionally, a winding shaft around which a label continuous body sent from a printer is wound, a motor for driving the winding shaft, a guide roller and an auxiliary roller for guiding the label continuous body sent from a printer, and a guide roller Based on the detection result of the swing roller that detects the position of the swing roller, the roller that detects the position of the swing roller In addition, there is known a winding device including a control unit that determines whether or not winding of the label continuous body has been completed (see Patent Document 1).

JP 2012-201491 A

  Unlike a conventional winding device, in a winding device in which power is input from a feeding unit of a printing device, the winding speed at which the print medium is wound around the winding shaft is substantially equal to the printing medium feeding speed in the printing device. Even when designed to be the same, if the diameter of the printing medium wound up on the winding shaft, that is, the winding roll becomes large, the winding roll is caused to take up by the inertia of the winding roll at the start of winding. The speed becomes slower than the feed speed, and the print medium becomes slack. This slackness of the printing medium is gradually eliminated by gradually increasing the winding speed and temporarily exceeding the feeding speed. Then, at the moment when the slack of the print medium disappears, the rotational energy of the take-up roll is directly transmitted to the print medium. That is, the print medium is pulled toward the winding device by the rotational energy of the winding roll. This adversely affects the printing medium feeding accuracy in the printing apparatus.

  An object of the present invention is to provide a winding device and a printing winding system in which adverse effects on the feeding accuracy of a printing medium in a printing device are suppressed.

  The winding device of the present invention includes a printing device having a feeding unit that feeds a print medium, a winding shaft that winds up the printing medium sent from the feeding unit, a power input unit that receives power from the feeding unit, and power. A winding-side power transmission mechanism that transmits power input to the input unit to the winding shaft, a first position where the print medium is bent between the printing apparatus and the winding shaft, and a shallower angle than the first position. And a lever that is movable between a second position where the print medium is bent and a force toward the first position is applied.

  According to this configuration, when the winding speed gradually increases and temporarily exceeds the feeding speed at the start of winding, the force that causes the lever bending the print medium to move the lever toward the first position. Against this, it moves from the first position to the second position. At this time, the rotational energy of the winding roll is converted into energy for moving the lever from the first position to the second position. That is, the rotational energy of the winding roll is absorbed by the lever moving from the first position to the second position. Therefore, the print medium is suppressed from being pulled to the winding device side by the rotational energy of the winding roll. Therefore, an adverse effect on the printing medium feeding accuracy in the printing apparatus is suppressed.

  In this case, the lever is positioned at the first position before starting the winding, and when the printing medium is temporarily loosened after the winding starts, the lever is pressed by the loosened printing medium, It is preferable to move from the first position to the second position and return to the first position.

  In this case, it is preferable that the first position is provided below the second position.

  According to this configuration, gravity acts on the lever as a force toward the first position. That is, the rotational energy of the winding roll is converted into the positional energy of the lever. For this reason, it is not necessary to provide a spring or the like as means for applying a force toward the first position to the lever.

  In this case, it is preferable to further include an elastic member against which the lever approaching the second position comes into contact.

  According to this configuration, the elastic member is elastically deformed when the lever approaching the second position hits the elastic member. As a result, even if the lever moves from the first position to the vicinity of the second position, the rotational energy of the winding roll is absorbed by the elastic member even when the rotational energy of the winding roll cannot be sufficiently absorbed. be able to. Therefore, the print medium is more reliably suppressed from being pulled toward the winding device by the rotational energy of the winding roll.

  In this case, the power input unit includes an input gear that meshes with the output gear of the feed unit, and a gear support member that rotatably supports the input gear, and the gear support member includes a proximal end of the input gear with respect to the output gear. It is preferable that a position restricting portion for restricting the position is provided.

  According to this configuration, when the winding device is mounted on the printing device, the input gear is prevented from being brought too close to the output gear. For this reason, the input gear can be meshed well with the output gear.

  In this case, it is preferable that the power input unit further includes an input support unit that is inserted into an input unit insertion recess provided in the printing apparatus and supports the power input unit so as to be swingable.

  When the user removes the take-up device from the printing device, if the take-up device is moved obliquely with respect to the direction in which the power input unit comes out from the input unit insertion recess of the printing device, power is input to the input unit insertion recess. The part will be caught. On the other hand, according to this structure, a power input part can be smoothly extracted from an input part insertion recessed part because a power input part rock | fluctuates with respect to an input support part.

  In this case, the lever preferably has a roller.

  According to this configuration, the roller is driven to rotate by friction with the printing medium being fed. For this reason, it can suppress that the printing surface of a printing medium is rubbed with a lever.

  In this case, the roller preferably includes a plurality of divided rollers divided in the axial direction.

  According to this configuration, since the contact area between the lever and the print surface of the print medium is reduced, it is possible to more effectively suppress the lever from rubbing the print surface of the print medium.

  In this case, it is preferable that the lever further includes a roller lever that supports the roller and is rotatable about a fulcrum.

  According to this configuration, the lever can be rotationally moved between the first position and the second position around the fulcrum of the rotating roller lever.

  In this case, it is preferable that the winding side power transmission mechanism has a torque limiter.

  According to this configuration, it is possible to absorb the speed difference between the feeding speed of the printing medium in the printing apparatus and the winding speed at which the printing medium is wound around the winding shaft by the torque limiter.

  In this case, it is preferable to further include a friction portion that imparts friction resistance to the print medium that is fed toward the take-up shaft from the printing apparatus to the take-up shaft.

The winding force acting on the print medium by the winding operation of the winding shaft is a force in the direction of pulling out the print medium from the printing apparatus (hereinafter referred to as “pull output”). When this pulling output is large, the winding device adversely affects the feeding accuracy of the printing medium in the printing device.
On the other hand, according to the present configuration, a frictional force in a direction opposite to the winding force is applied to the print medium fed toward the winding shaft by the friction portion. As a result, the attractive force acting on the print medium is reduced. Thereby, the winding device can more effectively suppress an adverse effect on the feeding accuracy of the printing medium in the printing device.

  In this case, it is preferable that the friction portion bends the print medium at a position where it comes into contact with the print medium.

  According to this configuration, since the component force of the winding force that acts on the print medium acts on the friction portion, a normal force corresponding to the winding force acts on the print medium. For this reason, the winding device can generate a sufficient frictional force between the print medium and the friction portion without providing a means for pressing the print medium against the friction portion.

  A printing winding system of the present invention includes the winding device described above and a printing device.

  According to this configuration, it is possible to obtain an appropriately printed print image by including the winding device in which adverse effects on the feeding accuracy of the printing medium in the printing device are suppressed.

1 is an external perspective view of a printing winding system including a winding device according to a first embodiment of the present invention. FIG. 2 is an external perspective view of the printing take-up system viewed from an angle different from that in FIG. 1. 1 is an external perspective view of a printing apparatus with a part thereof exposed. It is a block diagram of a printing side power transmission mechanism and a winding side power transmission mechanism. It is a figure around the power input part of the winding apparatus which concerns on 1st Embodiment. 1 is an external perspective view of a winding device according to a first embodiment. It is an external appearance perspective view of the winding device which concerns on 1st Embodiment seen from the angle different from FIG. It is an external appearance perspective view of the winding device which concerns on 1st Embodiment seen from the angle different from FIG. It is a right view of the winding apparatus which concerns on 1st Embodiment. It is a perspective view of a positioning mechanism. It is a top view of a positioning mechanism. It is a figure around a flange attachment / detachment lever. It is a figure which shows the roll paper wound up by the winding shaft in the winding apparatus which concerns on related technology. It is a figure which shows the roll paper wound up by the winding shaft in the winding apparatus of 1st Embodiment. It is a figure for demonstrating the effect | action of the lever in the winding apparatus which concerns on 1st Embodiment. It is an external appearance perspective view of the winding device which concerns on 2nd Embodiment of this invention. It is a right view of the winding apparatus which concerns on 2nd Embodiment. It is a figure for demonstrating the effect | action of the friction part in the winding apparatus which concerns on 2nd Embodiment.

Hereinafter, a print winding system according to an embodiment of the present invention will be described with reference to the accompanying drawings. The printing winding system according to the present embodiment includes a printing apparatus that prints an image by an inkjet method on a printing medium that is a long material such as roll paper, and a winding that winds a printed printing medium sent from the printing apparatus. And a take-off device.
In the following, description will be made using “up”, “down”, “left”, “right”, “front”, and “rear” shown in the drawings, but these directions are for convenience of explanation, and the present invention is implemented. Is not limited to these directions.

<First Embodiment>
With reference to FIG. 1 and FIG. 2, the printing winding system 1 provided with the winding apparatus 200 which concerns on 1st Embodiment of this invention is demonstrated. The print winding system 1 includes a printing apparatus 100 and a winding apparatus 200 provided in front of the printing apparatus 100.

First, the printing apparatus 100 will be described.
As shown in FIGS. 1 to 3, the printing apparatus 100 has a substantially rectangular parallelepiped apparatus case 101. On the front surface of the device case 101, a display / operation panel 102 on which a display, operation buttons, and the like are arranged is provided in the upper half on the left side. Below the display / operation panel 102, a drawer-type ink cartridge replacement port 103 is provided. Further, on the front surface of the apparatus case 101, a paper discharge port 104 that is long on the left and right is provided in the approximate center on the right. The printed roll paper S (see FIG. 15) is discharged from the paper discharge port 104 toward the winding device 200. A substantially rectangular input portion insertion recess 105 is formed below the paper discharge port 104. A power input unit 206 (described later) of the winding device 200 is inserted into the right end portion of the input unit insertion recess 105 from the front.

  On the right side surface of the apparatus case 101, a waste ink tank replacement port 106 is provided below the front side. A roll paper supply port 107 is widely provided behind the waste ink tank replacement port 106 toward the rear surface of the apparatus case 101. A roll paper loading unit 108 is provided inside the roll paper supply port 107. The user loads the roll paper S wound so as to be fed out into the roll paper loading unit 108 from the roll paper supply port 107.

  The apparatus case 101 is provided with an exterior cover 109 that opens and closes the inside of the apparatus from above the roll paper supply port 107 to the upper surface of the apparatus case 101. The exterior cover 109 rotates around a hinge 111 provided at substantially the center of the upper surface of the apparatus case 101.

  On the lower surface of the device case 101, a base member 112 having a substantially rectangular thick plate shape is attached to four corners. Further, on the lower surface of the apparatus case 101, two printing side engaging portions 113 are provided side by side on the right and left sides of the front end portion (see FIG. 2). Each printing-side engagement portion 113 is formed to protrude in a substantially cylindrical shape. The two printing side engaging portions 113 are engaged with two winding side engaging portions 230 described later.

  As shown in FIG. 3, the printing apparatus 100 includes a roll paper loading unit 108, a guide unit 114 provided above the roll paper loading unit 108, and a feeding unit that feeds the roll paper S from the roll paper loading unit 108. 115 (see FIG. 4), a printing unit (not shown) provided in front of the guide unit 114, and a control unit (not shown) that controls these units in an integrated manner. The roll paper S fed out from the roll paper loading unit 108 is fed while being guided by the guide unit 114, printed by a printing unit having an inkjet head, and then discharged from the paper discharge port 104.

  The feed unit 115 includes a feed motor 116 (see FIG. 4) serving as a drive source and a feed roller to which power of the feed motor 116 is input via a gear train (not shown). The feed roller is provided between the guide unit 114 and the printing unit, and rotates and feeds the roll paper S.

  As shown in FIG. 4, the power of the feed motor 116 is input to the winding device 200 side via the printing side power transmission mechanism 117. The print-side power transmission mechanism 117 includes a small gear 118 coupled to the output shaft of the feed motor 116, a print-side first intermediate gear 119 that meshes with the small gear 118, a print-side shaft 121, and a print-side shaft 121. A printing-side second intermediate gear 122 connected to the printing-side first intermediate gear 119, and an output gear 123 that meshes with the printing-side second intermediate gear 122. The output gear 123 meshes with an input gear 281 (described later) of the winding device 200.

  As shown in FIG. 5, an output-side engagement portion 124 that is substantially “L” -shaped in a left side view is formed to protrude from the right rear portion of the input portion insertion recess 105. The output side engaging portion 124 is engaged with an input side engaging portion 283 (described later) of the winding device 200.

Next, the winding device 200 will be described.
As shown in FIGS. 6 to 9, the winding device 200 includes a substantially rectangular plate-shaped base plate 201, a flat rectangular parallelepiped-shaped winding support portion 202 erected on the left side of the base plate 201, and a base plate 201. A roll paper introduction stand 203 erected on the rear side, that is, on the printing apparatus 100 side. In addition, the winding device 200 includes a positioning mechanism 204 (see FIGS. 10 and 11) provided on the roll paper introduction table 203 and a substantially cylindrical winding that is cantilevered on the right side of the winding support unit 202. A take-up shaft 205, a power input unit 206 provided on the upper right of the rear surface of the roll paper introduction table 203, and a take-up side power transmission mechanism 207 incorporated in the roll paper introduction table 203 and the take-up support unit 202 (see FIG. 4). And a lever 208 provided between the roll paper introduction table 203 and the take-up shaft 205.

  The winding support unit 202 includes a right inner wall 211 and a left outer wall 212. A substantially arc-shaped roller movement opening 213 is formed in the inner wall 211. A handle 214 is provided on the upper part of the winding support unit 202. The user can carry the winding device 200 by grasping the handle 214. In addition, guide portions 215 for roughly guiding the roll paper S sent from the printing apparatus 100 are provided at both left and right ends of the upper portion of the roll paper introduction base 203. A space between the guide portions 215 is formed on a downward slope. The roll paper S is sent from the printing apparatus 100 with the printing surface facing up. The roll paper S sent from the printing apparatus 100 is sent through a substantially “V” -shaped feed path from the roll paper introduction table 203 through the lever 208 to the take-up shaft 205 (see FIG. 15). .

The positioning mechanism 204 is for positioning the installation position of the winding device 200 with respect to the printing apparatus 100.
As shown in FIGS. 10 and 11, the positioning mechanism 204 includes a positioning plate 221 (see FIG. 2) provided at the rear end portion of the base plate 201, and two hook members 222 that are rotatably supported by the positioning plate 221. A slide member 223 provided on the positioning plate 221, a positioning spring 231 for biasing the slide member 223 to the right, and a lock release handle 224 provided on the right side surface of the roll paper introducing base 203 (FIG. 6 and the like). Reference), an interlocking mechanism 225 for connecting the lock release handle 224 and the slide member 223, and a positioning cover 226 (see FIG. 6 and the like) provided at the rear lower end portion of the roll paper introduction table 203.

  The positioning plate 221 is formed in a substantially rectangular plate shape. On the rear side of the positioning plate 221, notches 227 are formed at two places on the left and right. The two printing-side engaging portions 113 described above enter / exit into the two notches 227. Each notch 227 is formed in a substantially rectangular shape in which the doorway side is expanded. In addition, a spring locking convex portion 228 protrudes from the approximate center of the positioning plate 221. The right end of the positioning spring 231 is hooked on the spring locking projection 228. Furthermore, a guide insertion hole 229 through which a guide piece 238 described later is inserted is provided at the left end portion of the positioning plate 221.

  Each hook member 222 is rotatably supported by the positioning plate 221 at a substantially intermediate portion thereof. Each hook member 222 is between a lock position that locks the printing-side engagement portion 113 that has entered the notch 227 and an unlock position that allows the printing-side engagement portion 113 to exit from the notch 227. Rotate with. That is, each hook member rotates from the lock position clockwise as viewed from above, and reaches the unlock position. The hook member 222 and the notch portion 227 constitute a winding side engaging portion 230.

  Each hook member 222 is urged toward the lock position by the positioning spring 231 via the slide member 223. An inclined portion 232 is formed at the tip of each hook member 222. When the print-side engagement portion 113 enters the notch 227, the print-side engagement portion 113 abuts against the inclined portion 232 of the hook member 222 positioned at the lock position, so that the hook member 222 contacts the positioning spring 231. Rotate from the locked position to the unlocked position. That is, the printing-side engaging portion 113 enters the notch 227 so as to push away the hook member 222 that closes the entrance / exit of the notch 227. A hook convex portion 233 that engages with the slide member 223 protrudes from the tail end portion of each hook member 222.

  The slide member 223 is provided so as to be slidable left and right with respect to the positioning plate 221. The slide member 223 is urged toward the right by the positioning spring 231. When the slide member 223 slides to the left from the right end position against the positioning spring 231, the hook member 222 rotates toward the unlock position. From this state, when the slide member 223 is urged by the positioning spring 231 and slides to the right, the hook member 222 rotates toward the lock position.

  The slide member 223 has substantially the same dimensions as the positioning plate 221 in the left-right direction, and is bent and formed in a substantially “L” shape when viewed from the right side. The slide member 223 has a hook member engaging portion 234 provided substantially parallel to the positioning plate 221 and an interlocking engaging portion 235 extending upward from the front end portion of the hook member engaging portion 234.

  The hook member engaging portion 234 is provided with two hook member engaging holes 236 with which the hook convex portions 233 are engaged. A spring locking piece 237 protrudes between the two hook member engagement holes 236. The left end of the positioning spring 231 is hooked to the spring locking piece 237. The positioning spring 231 is configured by a tension coil spring and biases the slide member 223 toward the right. In addition, a guide piece 238 extending left and right is provided at the left end portion of the hook member engaging portion 234. The guide piece 238 is inserted into the guide insertion hole 229, and the left and right slides of the slide member 223 are guided.

  An interlocking engagement hole 241 and an interlocking screw hole (not shown) are provided at the right end of the interlocking engagement part 235 in order from the outside. An interlocking engagement convex portion 249 described later is engaged with the interlocking engagement hole 241. An interlocking fixing screw 242 is inserted through the interlocking screw hole. Further, an index convex portion 243 is formed on the upper end surface of the right end portion of the interlocking engagement portion 235 so as to protrude in a substantially semicircular shape when viewed from the back.

  The unlocking handle 224 is formed in a substantially inverted “U” shape in rear view. The lock release handle 224 is configured to be slidable back and forth. The lock release handle 224 is urged rearward by a spring (not shown).

  The interlock mechanism 225 slides the slide member 223 to the left in conjunction with the forward slide operation of the lock release handle 224. The interlocking mechanism 225 includes a handle side interlocking member 244 provided at the lower end of the lock release handle 224 and a plate side interlocking member 245 provided at the front right end of the slide member 223.

  The handle side interlocking member 244 slides back and forth as the lock release handle 224 slides back and forth. At the lower end of the handle side interlocking member 244, an operation portion 246 having a substantially right triangle shape when viewed from above is provided.

  The plate side interlocking member 245 is integrated with the slide member 223 and slides left and right. The plate-side interlocking member 245 includes a mounting portion 247 that has a substantially inverted “L” shape when viewed from above, and an operation receiving portion 248 that extends obliquely forward to the right from the front right side of the mounting portion 247.

  On the rear surface of the attachment portion 247, an interlocking engagement convex portion 249 protrudes. The interlocking engagement convex portion 249 is engaged with the interlocking engagement hole 241 described above. The attachment portion 247 is screwed to the interlocking engagement portion 235 with an interlocking fixing screw 242. The operation receiving portion 248 is a portion that is pressed by the operation portion 246 that slides forward. The plate-side interlocking member 245 slides to the left when the operation receiving portion 248 is pressed forward by the operation portion 246.

  In the interlocking mechanism 225 configured as described above, when the lock release handle 224 is slid forward, the handle side interlocking member 244 slides forward, and the operating portion 246 presses the operating receiving portion 248 forward. As a result, the plate-side interlocking member 245 and the slide member 223 are integrated and slide to the left against the positioning spring 231.

  The positioning cover 226 covers the positioning plate 221, the hook member 222, and the slide member 223. A substantially rectangular index opening 251 (see FIG. 8) that is long on the left and right is formed at the upper right front corner of the positioning cover 226. For example, a triangular index mark 252 (see FIG. 8) is formed at the right end of the edge of the index opening 251. The user can visually recognize the index convex portion 243 through the index opening 251. The index mark 252 is formed such that the position of the index convex portion 243 in the left-right direction substantially coincides with the slide member 223 positioned at the right end position.

  In the positioning mechanism 204 configured as described above, when the winding device 200 is mounted on the printing apparatus 100, the user slides the winding device 200 toward the printing apparatus 100 on the placement surface. As a result, the printing-side engagement portion 113 hits the hook member 222, and the hook member 222 rotates from the lock position to the unlock position against the positioning spring 231. At this time, the slide member 223 slides to the left. After the hook member 222 enters the notch 227, the hook member 222 is returned to the lock position by the positioning spring 231, and the hook member 222 locks the printing side engagement portion 113. At this time, the slide member 223 returns to the right end position.

  In this way, by locking the printing side engaging portion 113 that has entered the notch 227 with the hook member 222, the winding side engaging portion 230 and the printing side engaging portion 113 are reliably engaged. Can be held. Then, the winding device 200 can be mounted on the printing apparatus 100 while being positioned with respect to the printing device 100 by engaging the winding side engagement portion 230 with the printing side engagement portion 113. it can. For this reason, it is possible to prevent the roll paper S wound around the take-up shaft 205 from being swollen due to the take-up device 200 being mounted with a positional shift with respect to the printing apparatus 100. . More specifically, when the take-up shaft 205 is installed with a positional deviation in the width direction (left-right direction) of the roll paper S with respect to the printing apparatus 100, there is a possibility that the swollenness may occur. By engaging the two winding-side engaging portions 230 with the two printing-side engaging portions 113, the winding shaft 205 is positioned in the width direction of the roll paper S with respect to the printing apparatus 100. It can be prevented from occurring.

  Here, if the printing-side engagement portion 113 does not completely enter the notch 227, the hook member 222 is not obstructed by the printing-side engagement portion 113 and does not return to the locked position. Engagement with the print-side engagement portion 113 is incomplete. In addition, since the printing-side engagement portion 113 is provided on the lower surface of the printing apparatus 100, the winding-side engagement portion 230 is moved by the printing apparatus 100 when the printing-side engagement portion 113 is in the notch 227. The user can directly see whether or not the hook member 222 is positioned at the locked position, that is, whether or not the printing-side engagement portion 113 is properly locked by the hook member 222. It has become difficult (see FIG. 1).

  In this regard, in the present embodiment, when the hook member 222 returns to the locked position, the slide member 223 also returns to the right end position, so that the user can position the index convex portion 243 in the left-right direction with the index mark 252. Will visually recognize that they match. On the contrary, when the hook member 222 does not return to the locked position, the slide member 223 also does not return to the right end position, so that the user has the index convex portion 243 positioned to the left of the index mark 252. Will be visually recognized. Thereby, the user can easily confirm whether or not the hook member 222 is located at the lock position. In other words, when the engagement between the winding side engaging portion 230 and the printing side engaging portion 113 is in an incomplete state, the user can easily notice that fact.

  On the other hand, when the user removes the winding device 200 from the printing device 100, first, when the user slides the lock release handle 224 forward, the slide member 223 moves to the left against the positioning spring 231 in conjunction with this. The hook member 222 rotates to the unlock position. As a result, the printing side engagement portion 113 is allowed to exit from the notch 227. In this state, the user slides on the mounting surface so as to separate the winding device 200 from the printing device 100. In this way, the winding device 200 can be easily detached from the printing device 100.

  The power of the feed motor 116 of the printing apparatus 100 is input to the winding shaft 205 via the printing-side power transmission mechanism 117 and the winding-side power transmission mechanism 207 (see FIG. 4). As a result, the take-up shaft 205 rotates and the roll paper S is taken up by the take-up shaft 205.

  As shown in FIGS. 6 to 9, the winding shaft 205 is rotatably supported by the winding support portion 202 via a shaft support rod 261 inserted through the shaft center. On the outer peripheral surface of the winding shaft 205, two arc portions 262 formed in a substantially arc shape and two cutout portions 263 cut in a substantially inverted trapezoidal shape are formed. The two arc portions 262 are in a point-symmetric position with respect to the axis, and the two cutout portions 263 are in a point-symmetric position with respect to the axis. Ratchet teeth 264 are formed on the surface of each cutout portion 263 along the axial direction of the winding shaft 205. A shaft gear 265 that meshes with a winding-side second intermediate gear 289, which will be described later, is provided at the left end of the winding shaft 205 (see FIG. 4).

  The take-up shaft 205 is provided with a first flange portion 271 fixed to the end portion on the take-up support portion 202 side and a second flange portion 272 that can be attached to and detached from the take-up shaft 205. The second flange portion 272 is provided with a flange attaching / detaching lever 273. The roll paper S sent from the printing apparatus 100 is wound around the winding shaft 205 while being guided in the width direction by the first flange portion 271 and the second flange portion 272.

  The first flange portion 271 is formed in a substantially disc shape. A substantially circular first shaft insertion hole (not shown) is formed at the center of the first flange portion 271. The winding shaft 205 is inserted through the first shaft insertion hole. On the inner surface of the first flange portion 271, that is, the surface facing the second flange portion 272, an annular convex portion 275 that protrudes from the outer periphery is provided on the inner peripheral edge portion. On the outer surface of the first flange portion 271, a substantially “cobweb” -shaped rib extending in the circumferential direction and the radial direction is formed.

The second flange portion 272 is formed in a substantially disc shape. A substantially circular second shaft insertion hole (not shown) is formed at the center of the second flange portion 272. The winding shaft 205 is inserted through the second shaft insertion hole. A flange attaching / detaching lever 273 is attached to the peripheral edge of the second shaft insertion hole. The inner surface of the second flange portion 272, that is, the surface facing the first flange portion 271 is formed flat. Similar to the first flange portion 271, the inner peripheral edge portion of the inner surface of the second flange portion 272 may be provided with an annular convex portion protruding from the outer periphery. On the outer surface of the second flange portion 272, a substantially “cobweb” -shaped rib extending in the circumferential direction and the radial direction is formed.
In addition, the shape of the 1st flange part 271 and the 2nd flange part 272 is not specifically limited, For example, even if it is polygonal plate shape (refer FIG. 17) like 2nd Embodiment mentioned later. Good. If the shapes of the first flange portion 271 and the second flange portion 272 are different from those of the flange (see FIG. 3) provided in the roll paper loading portion 108 of the printing apparatus 100, they can be easily distinguished from each other. ,preferable.

  As shown in FIG. 12, a ratchet claw 277 that meshes with the ratchet teeth 264 formed on the winding shaft 205 is formed at the left end of the flange attaching / detaching lever 273. The ratchet teeth 264 and the ratchet pawl 277 allow the second flange portion 272 to slide in the approaching direction (leftward) with respect to the first flange portion 271 and slide in the separating direction (rightward). Stop that. The flange attachment / detachment lever 273 is supported at a substantially right and left intermediate portion so as to be rotatable between an engagement position where the ratchet pawl 277 is engaged with the ratchet teeth 264 and a disengagement position where the ratchet pawl 277 is disengaged from the ratchet teeth 264. Has been. The flange attachment / detachment lever 273 is urged to rotate toward the engagement position by a flange spring 278. At the right end of the flange attaching / detaching lever 273, a knob 279 (see FIG. 6) for rotating the flange attaching / detaching lever 273 toward the disengagement position is formed.

  Here, a procedure for the user to set the roll paper S on the take-up shaft 205 will be described. First, the user operates the flange attaching / detaching lever 273 to remove the second flange portion 272 from the winding shaft 205. Subsequently, the user winds the leading end of the roll paper S around the winding shaft 205 about once or twice. Subsequently, the user attaches the second flange portion 272 to the winding shaft 205.

  As shown in FIG. 13, unlike the winding device 200 of the present embodiment, if the first flange portion 271 is not provided with the annular convex portion 275, the second flange portion 272 is moved to the right end of the roll paper S. When it is slid toward the first flange portion 271 until it hits, not only the roll paper S is crushed in the width direction (see FIG. 13A), but also the first flange portion 271 Since the distance between the inner surface and the inner surface of the second flange portion 272 is narrower than the width of the roll paper S at any location in the radial direction, the roll paper S that is wound after that is also crushed in the width direction. (See FIG. 13B). When the roll paper S is crushed in the width direction as described above, a gap is generated between the roll papers S wound around the take-up shaft 205, which causes a bulge.

  As shown in FIG. 14, in the winding device 200 of the present embodiment, the distance between the inner surface of the first flange portion 271 and the inner surface of the second flange portion 272 is larger than the inner peripheral edge portion where the annular convex portion 275 is provided. , Its outer periphery is wider. Therefore, when the user attaches the second flange portion 272 to the take-up shaft 205, the user presses the second flange portion 272 lightly against the right end of the roll paper S, and thus the annular convex portion 275 of the first flange portion 271. Even when the roll paper S is crushed in the width direction between the first flange portion 272 and the second flange portion 272 (see FIG. 14A), the roll paper S wound around the winding shaft 205, that is, the winding roll R. When the diameter becomes larger than the outer diameter of the annular convex portion 275, the collapse of the roll paper S in the width direction is eliminated (see FIG. 14B). After the collapse in the width direction of the roll paper S is eliminated, the roll paper S can be stably wound up. Therefore, the degree of bulging can be reduced.

  Here, the protrusion height H of the annular convex portion 275 is preferably 0.3 mm or greater and 1.0 mm or less. If the protrusion height H of the annular protrusion 275 is 0.3 mm or more, the roll paper S is effectively crushed in the stage where the diameter of the winding roll R is larger than the outer diameter of the annular protrusion 275. Can be eliminated. Moreover, if the protrusion height H of the annular convex portion 275 is 1.0 mm or less, the first flange portion 271 and the second flange portion 271 and the second flange portion 275 become larger after the diameter of the winding roll R becomes larger than the outer diameter of the annular convex portion 275. The roll paper S can be taken up while the side edge of the roll paper S is reliably guided by the flange portion 272.

Further, the difference D between the outer peripheral radius and the inner peripheral radius of the annular convex portion 275 is preferably 3 mm or more and 5 mm or less. Since the difference D between the outer peripheral radius and the inner peripheral radius of the annular convex portion 275 is 3 mm or more, the first flange can be used even when the user winds the leading end portion of the roll paper S around the winding shaft 205 relatively loosely. The roll paper S can be set between the annular convex portion 275 of the portion 271 and the second flange portion 272. In addition, since the difference D between the outer peripheral radius and the inner peripheral radius of the annular convex portion 275 is 5 mm or less, the roll paper S can be prevented from being crushed at an early stage after the start of winding.
Further, the inner diameter (inner diameter) of the annular convex portion 275 is not particularly limited, and is, for example, 70 mm or more and 90 mm or less.

Further, when the second flange portion 272 is attached to the take-up shaft 205, the user feels a ticking feeling due to the engagement between the ratchet teeth 264 and the ratchet pawl 277, while the second flange portion 272 is attached to the first flange portion 271. Can be slid toward. For this reason, the user can slide the second flange part 272 toward the first flange part 271 little by little without sliding it at a stroke, and attach it to a desired position. Therefore, it is possible to prevent the roll paper S from being excessively crushed, which can be a cause of swell.
As a method of setting the roll paper S on the take-up shaft 205, in addition to the above-described method of directly winding the front end portion of the roll paper S around the take-up shaft 205, a paper tube to which the front end of the roll paper S is bonded is used. There is a method of mounting on the winding shaft 205.

  As shown in FIG. 5, the power input unit 206 includes an input gear 281 to which power from the feeding unit 115 of the printing apparatus 100 is input, and a gear support member 282 that rotatably supports the input gear 281.

The gear support member 282 is formed in a flat box shape whose front and rear are open. An input gear 281 is supported inside the gear support member 282. The gear support member 282 is supported at the base end portion thereof so as to be able to swing up and down on the printing apparatus 100 side of the roll paper introduction table 203.
The roll paper introduction table 203 is an example of the “input support unit” in the claims.

  Here, when the user removes the winding device 200 from the printing device 100, the winding device 200 is removed from the input unit insertion recess 105 of the printing device 100 in the direction in which the power input unit 206 comes out (from back to front). In the case where the winding device 200 is moved obliquely, for example, when the winding device 200 is lifted obliquely upward by holding the handle 214 without sliding the winding device 200 along the mounting surface, the input portion insertion recess The power input unit 206 is caught on the upper edge portion of 105. In this regard, in this embodiment, the gear support member 282 is supported on the roll paper introduction base 203 so as to be swingable up and down, so that the power input unit 206 is caught on the upper edge of the input unit insertion recess 105. Even so, since the gear support member 282 swings downward with respect to the roll paper introduction table 203, the power input unit 206 can be smoothly pulled out from the input unit insertion recess 105. Therefore, it is possible to prevent the input unit insertion recess 105 of the printing apparatus 100 and the power input unit 206 of the winding apparatus 200 from being damaged.

Further, an input side engaging portion 283 is formed in the left side wall portion of the gear support member 282 in a notch manner near the rear end portion, that is, the upper end portion on the printing apparatus 100 side. The output side engaging portion 124 is engaged with the input side engaging portion 283. Thereby, the position of the proximal end of the input gear 281 with respect to the output gear 123 is restricted. This prevents the input gear 281 from being too close to the output gear 123 when the winding device 200 is mounted on the printing device 100. Therefore, the input gear 281 can be meshed with the output gear 123 well.
The input side engaging portion 283 is an example of a “position restricting portion” in the claims.

  As shown in FIG. 4, the winding side power transmission mechanism 207 includes a winding side first intermediate gear 284 that meshes with the input gear 281, a winding side connecting shaft 285, and a winding side via the connecting shaft. A small pulley 286 coupled to the first intermediate gear 284, a large pulley 287, an endless belt 288 spanned between the small pulley 286 and the large pulley 287, and a winding meshing with the shaft gear 265. Side second intermediate gear 289, and a torque limiter 290 interposed between the large pulley 287 and the winding side second intermediate gear 289.

  The winding-side first intermediate gear 284 is built in the upper right part of the roll paper introduction table 203. The take-up side connecting shaft 285 is provided on the upper side of the roll paper introduction table 203 across the left and right. The small pulley 286 and the large pulley 287 are provided outside the outer wall 212 of the winding support portion 202 (see FIG. 7). The winding-side second intermediate gear 289 is provided between the outer wall 212 and the inner wall 211.

  In addition, since the torque limiter 290 is interposed between the large pulley 287 and the winding-side second intermediate gear 289, the winding shaft 205 can be rotated with a substantially constant winding torque. Further, by providing the torque limiter 290, even if the diameter of the winding roll R varies as the winding progresses, the torque limiter 290 causes the feeding speed of the roll paper S in the printing apparatus 100 and the winding apparatus. The winding speed of the roll paper S at 200 can be maintained substantially the same. That is, the torque limiter 290 can absorb the speed difference between the feed speed and the winding speed.

  As shown in FIGS. 6 and 9, the lever 208 includes a roller 291, a roller shaft 292 that rotatably supports the roller 291, and a roller lever 293 that supports the roller shaft 292.

  The roller 291 includes, for example, six divided rollers 291a divided in the axial direction. Each division roller 291a is made of rubber, for example, and is formed in a ring shape. The six divided rollers 291a are driven to rotate by friction with the roll paper S being fed. For this reason, it is possible to suppress the printing surface of the roll paper S from being rubbed by the lever 208. In addition, since the roller 291 is configured by the six divided rollers 291a, the contact area between the lever 208 and the roll paper S is reduced, so that the print surface of the roll paper S is rubbed by the lever 208. It can be effectively suppressed. Therefore, it is possible to prevent the print image from being damaged by the lever 208. The number of division rollers 291a is arbitrary, and may be two, for example, but by providing more than that, it is possible to cope with roll paper S having various paper widths. In addition, it is preferable that the mutual space | interval of the some division | segmentation roller 291a is set according to the kind of paper width of the roll paper S. FIG.

  The left end portion of the roller shaft 292 is fixed to the roller lever 293 through the roller moving opening 213 described above. The roller lever 293 is provided between the inner wall 211 and the outer wall 212 of the winding support unit 202. The roller lever 293 is rotatably supported by a lever support shaft 294 (see FIG. 7) having a roller shaft 292 fixed to one end and the other end fixed to the outer wall 212.

  Between the inner wall 211 and the outer wall 212 of the winding support portion 202, a lever restricting member (not shown) for restricting the rotational movement end of the roller lever 293 downward, and the rotational movement of the roller lever 293 upward. An elastic member 295 (see FIG. 9) that restricts the end is provided. When the roller lever 293 that rotates downward hits the lever restricting member, the rotational movement end of the roller lever 293 downward is restricted. The elastic member 295 is composed of, for example, a compression coil spring. When the roller lever 293 that rotates upward hits the elastic member 295, the rotational movement end of the roller lever 293 upward is restricted.

  The lever 208 rotates up and down between a first position P1 in a state where the roller lever 293 hits the lever restricting member and a second position P2 in a state where the roller lever 293 hits the elastic member 295. That is, the lever 208 bends the roll paper S at a first position P1 (see FIGS. 15 (1) to (3)) and a second position P2 (see FIG. 15) that bends the roll paper S at a shallower angle than the first position P1. (Refer to (4)). The roller movement opening 213 is formed in accordance with the movement locus of the roller shaft 292 of the lever 208 that rotates between the first position P1 and the second position P2.

  The lever 208 is normally located at the first position P1 that becomes the downward rotational movement end due to its own weight. That is, gravity acts on the lever 208 as a force toward the first position P1. For this reason, it is not necessary to provide a spring or the like as means for applying a force toward the first position P1 to the lever 208. Note that a force toward the first position P1 may be applied to the lever 208 by a spring or the like.

  With reference to FIG. 15, the operation of lever 208 at the start of winding in winding device 200 will be described. First, before starting winding, that is, before driving the feed motor 116, the lever 208 is positioned at the first position P1 (see FIG. 15 (1)).

  When the feed motor 116 is driven and winding is started, the feed speed in the printing apparatus 100 immediately reaches a predetermined speed. On the other hand, the take-up speed in the take-up device 200 rises slowly due to the inertia of the take-up roll R, particularly when the diameter of the take-up roll R is large. Therefore, the winding speed is slower than the feed speed at the start of winding. For this reason, the roll paper S is temporarily slackened at the portion from the roll paper introduction table 203 to the take-up shaft 205 (see FIG. 15B).

  Thereafter, the winding speed catches up with the feeding speed, and further, the winding speed becomes faster than the feeding speed. Thereby, the looseness of the roll paper S is gradually eliminated. When the slack of the roll paper S disappears, the winding speed becomes maximum (see FIG. 15 (3)).

  Immediately after the slack of the roll paper S disappears, the winding speed is high and the rotational energy of the take-up roll R is large. It is pushed up (see FIG. 15 (4)). That is, the rotational energy of the winding roll R is converted into the potential energy of the lever 208.

  At this time, the lever 208 usually starts to descend before reaching the second position P2, but may reach the second position P2 when the diameter of the winding roll R is large. In this case, the roller lever 293 of the lever 208 approaching the second position P2 hits the elastic member 295, and the elastic member 295 is elastically deformed. As a result, even when the lever 208 has moved from the first position P1 to the vicinity of the second position P2, the rotational energy of the winding roll R cannot be sufficiently absorbed. It can be absorbed by the elastic member 295.

  Thereafter, when the winding speed is gradually decreased and becomes substantially the same as the feeding speed, the lever 208 returns to the first position P1 (see FIG. 15 (1)). Thereafter, the roll paper S is wound around the winding shaft 205 while maintaining the winding speed substantially the same as the feeding speed and the lever 208 is positioned at the first position P1. The force acting on the roll paper S by the winding operation of the winding shaft 205 is referred to as a winding force F1 (see FIG. 18).

  As described above, according to the winding device 200 of the present embodiment, the roll paper S is bent when the winding speed gradually increases and temporarily exceeds the feeding speed at the start of winding. The lever 208 rises from the first position P1 to the second position P2 against the gravity that causes the lever 208 to move toward the first position P1. At this time, the rotational energy of the winding roll R is converted into potential energy that raises the lever 208 from the first position P1 to the second position P2. That is, when the lever 208 moves from the first position P1 to the second position P2, the rotational energy of the winding roll R is absorbed. Therefore, the roll paper S is suppressed from being pulled toward the winding device 200 by the rotational energy of the winding roll R. Therefore, adverse effects on the feeding accuracy of the roll paper S in the printing apparatus 100 are suppressed. Thereby, in the printing winding system 1 of this embodiment, the printed image printed appropriately can be obtained.

  Further, the winding device 200 is installed in a positioning state with respect to the printing apparatus 100 by the positioning mechanism 204 described above. However, even if the installation position of the winding device 200 varies, the lever 208 is used. Therefore, the roll paper S can be prevented from being skewed and fed in the printing apparatus 100. That is, the variation in the installation position can be reduced by the bent portion of the roll paper S.

Second Embodiment
A winding device 200A according to a second embodiment of the present invention will be described with reference to FIGS. The printing winding system 1 described above can use a winding device 200 </ b> A instead of the winding device 200. The winding device 200 </ b> A has substantially the same configuration as the winding device 200, but further includes a friction portion 296.
In the winding device 200A, components that are substantially the same as those of the winding device 200 are denoted by the same reference numerals and description thereof is omitted.

The friction part 296 gives a frictional resistance to the roll paper S fed toward the take-up shaft 205. The friction part 296 is provided between the roll paper introduction table 203 and the lever 208. The friction portion 296 includes a support shaft 297 and a plurality (five in the drawing) of friction members 298. The support shaft 297 is provided between the left and right guide portions 215. The friction member 298 is made of a high-friction material, and rubber can be suitably used as the high-friction material, for example. The plurality of friction members 298 are supported by the support shaft 297 so as to be arranged on the left and right at substantially equal intervals. Each friction member 298 is formed in a ring shape and is non-rotatably fitted to the support shaft 297. When the winding shaft 205 starts the winding operation, the surface opposite to the printing surface of the roll paper S comes into sliding contact with the friction member 298. As a result, a frictional resistance with the friction member 298 is given to the roll paper S fed toward the take-up shaft 205.
In addition, each friction member 298 can be comprised by the same components as the division | segmentation roller 291a. As a result, the parts can be shared. Further, instead of the plurality of friction members 298, the friction portion 296 may be configured by a single friction member 298 having a length corresponding to the width of the roll paper S.

  In addition, the friction portion 296 bends the roll paper S at an obtuse angle at the contact position P3 that contacts the roll paper S. As a result, the component force F1a of the winding force F1 acting on the roll paper S acts on the friction portion 296, so that the vertical drag F2 corresponding to the winding force F1 acts on the roll paper S. For this reason, the winding device 200 </ b> A can generate a sufficient frictional force F <b> 3 between the roll paper S and the friction portion 296 without providing a means for pressing the roll paper S against the friction portion 296. .

The winding device 200 </ b> A configured as described above has the following operational effects in addition to the operational effects of the winding device 200.
In the winding device 200A, a frictional force F3 in a direction opposite to the winding force F1 is applied to the roll paper S being fed toward the winding shaft 205 by the friction portion 296. As a result, the pulling output F4 acting on the roll paper S, that is, the force in the direction of pulling out the roll paper S from the printing apparatus 100 is reduced. Thereby, the winding device 200 </ b> A can more effectively suppress adverse effects on the feeding accuracy of the roll paper S in the printing device 100. As a result, the landing position of the ink is suppressed from being shifted, and the deterioration of the print quality is prevented.

  The friction portion 296 applies a frictional force F3 that minimizes the pulling force F4, that is, a frictional force F3 equivalent to the winding force F1 without exceeding the winding force F1 to the roll paper S. Is preferred. That is, it is preferable to select the material of the friction member 298, the bending angle of the roll paper S, and the like so that the pulling force F4 is as small as possible. Further, the position of the friction portion 296 is not particularly limited, and may be provided on the upstream side of the roll paper introduction table 203 or may be provided on the downstream side of the lever 208. Further, the friction member 298 is preferably in contact with the surface opposite to the printing surface as in the present embodiment in the sense that the printing surface of the roll paper S is not soiled, but may be configured to be in contact with the printing surface. .

  DESCRIPTION OF SYMBOLS 1: Print winding system, 100: Printing apparatus, 115: Feed part, 200: Winding apparatus, 205: Winding shaft, 206: Power input part, 208: Lever, P1: 1st position, P2: 2nd position , S: Roll paper

Claims (13)

A printing apparatus having a feeding section for sending a print medium, a winding shaft on which the print medium sent from the printing apparatus is wound,
A power input unit to which power from the feed unit is input;
A winding-side power transmission mechanism that transmits power input to the power input unit to the winding shaft;
It is movable between a first position where the print medium is bent and a second position where the print medium is bent at an angle shallower than the first position between the printing apparatus and the winding shaft. A lever acting on the force toward the first position;
A winding device comprising: The lever is
Before the start of winding, it is located at the first position,
When the print medium is temporarily slackened after the start of winding, the print medium moves from the first position to the second position by being pressed by the slack print medium, and the first position The winding device according to claim 1, wherein the winding device returns to step S2.   The winding device according to claim 1 or 2, wherein the first position is provided below the second position.   The winding device according to any one of claims 1 to 3, further comprising an elastic member against which the lever approaches the second position. The power input unit includes an input gear that meshes with an output gear of the feed unit, and a gear support member that rotatably supports the input gear,
The winding according to any one of claims 1 to 4, wherein the gear support member is provided with a position restricting portion that restricts a position of a proximal end of the input gear with respect to the output gear. apparatus. The power input unit is inserted into an input unit insertion recess provided in the printing apparatus,
The winding device according to any one of claims 1 to 5, further comprising an input support portion that swingably supports the power input portion.   The winding device according to any one of claims 1 to 6, wherein the lever includes a roller.   The winding device according to claim 7, wherein the roller includes a plurality of divided rollers divided in the axial direction. The lever is
A roller lever that supports the roller and is rotatable about a fulcrum;
The winding device according to claim 7 or 8, further comprising:   The winding device according to any one of claims 1 to 9, wherein the winding-side power transmission mechanism includes a torque limiter.   The friction part which provides a frictional resistance with respect to the said printing medium sent toward the said winding shaft between the said printing apparatus and the said winding shaft is further provided. The winding device according to any one of the above.   The winding device according to claim 11, wherein the friction portion bends the print medium at a position in contact with the print medium. A winding device according to any one of claims 1 to 12,
The printing device;
A printing winding system characterized by comprising:

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