JP2017052629A - Medium winding device and medium winding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medium winding device with a simplified structure, reduced costs, and an improved operability.SOLUTION: The medium winding device includes: a first winding member 14 for winding up a label paper body Pb into a roll; a first drive unit for rotating the first winding member; a second winding member 86 for winding up a residuum Pa into a roll; a second drive unit for rotating the second winding member; and a tension adjustment member 18 which is arranged between the second drive unit and the second winding member, and which when a predetermined load is exerted onto the second winding member, rotates the second drive unit side and the second winding member side relatively to each other, thereby applying a constant tension to the residuum. When the predetermined load is exerted onto the second winding member, the second drive unit side and the second winding member side are rotated relatively to each other, and a constant tension is applied to the residuum, so that the residuum can be wound up to the second winding member in a stabilized state.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a medium winding device and a medium winding method.

  Conventionally, in a printer that prints on a sheet as a long medium, that is, continuous paper, a paper feeding unit is provided outside the printer, and the continuous paper fed from the paper feeding unit is placed in the printing unit. After being sent and printed in the printing section, it is discharged out of the printer from the discharge port.

  In addition, a roll paper take-up device as a medium take-up device is disposed outside the printer adjacent to the discharge port, and in the roll paper take-up device, the continuous paper discharged outside the printer is taken up by a take-up roller, Roll paper as a roll medium is formed.

  By the way, in the printer, when printing on a label attached to a mount, a release paper having an adhesive applied on the back is attached to the mount, and a predetermined portion of the release paper is half-shaped into a label shape. The base paper formed by cutting is used, and the base paper is set in the paper feeding unit.

  In this case, in order to easily peel off the label from the mount, when the base paper discharged out of the printer is sent to the take-up roller, release paper (hereinafter referred to as “scrap”) other than the label is removed in advance. ing. For this purpose, a waste paper take-up device is provided in the roll paper take-up device, where the waste residue is peeled off from the backing sheet, and the waste residue removed from the backing paper is wound on the take-up shaft by driving the waste lifting motor. It is done.

  However, in this type of roll paper winding device, if the tension applied to the residue is not stable, the residue cannot be stably wound on the take-up shaft. Thus, in order to keep the tension applied to the residue constant, it is conceivable to use a powder clutch to control the torque transmitted from the residue raising motor to the take-up shaft (see, for example, Patent Document 1).

JP 2007-261188 A

  However, in the conventional roll paper take-up device, if a powder clutch is used to control the torque transmitted from the waste lifting motor to the take-up shaft, not only the structure of the roll paper take-up device is complicated, but also the roll The cost of the paper winding device is increased.

  Therefore, it is conceivable to use a torque adjustment mechanism that monitors the state in which the residue is wound around the take-up shaft and adjusts the torque in accordance with the state of the residue. The state of the residue must be monitored and the torque must be adjusted, and the operability of the roll paper winding device will be reduced.

  The present invention solves the problems of the conventional roll paper winding device, can simplify the structure, reduce the cost, and improve the operability. The purpose is to provide a winding method.

  Therefore, in the medium winding device of the present invention, a first roll for winding a label paper main body, which is rotatably arranged and formed by peeling off a debris and includes a plurality of labels on a mount, in a roll shape. A winding member, a first drive unit that rotates the first winding member to wind up the label paper body, and a roll that is rotatably disposed and wound off from the mount in a roll shape A second winding member, a second driving unit that rotates the second winding member to wind up the residue, and is disposed between the second driving unit and the second winding member. When a predetermined load is applied to the second winding member, a tension adjusting member that relatively rotates the second drive unit side and the second winding member side to apply a constant tension to the residue. And have.

  According to the present invention, in the medium winding device, a first roll for winding a label paper body, which is rotatably arranged and formed by peeling off the residue, and has a plurality of labels on the mount, in a roll shape. A winding member, a first drive unit that rotates the first winding member to wind up the label paper body, and a roll that is rotatably disposed and wound off from the mount in a roll shape A second winding member, a second driving unit that rotates the second winding member to wind up the residue, and is disposed between the second driving unit and the second winding member. When a predetermined load is applied to the second winding member, a tension adjusting member that relatively rotates the second drive unit side and the second winding member side to apply a constant tension to the residue. And have.

  In this case, when a tension adjusting member is disposed between the second driving unit and the second winding member, and a predetermined load is applied to the second winding member, the second driving unit side and the second winding unit Since a certain tension is applied to the dregs, the dregs can be stabilized and wound around the second take-up member.

  In addition, since it is not necessary to use a powder clutch to control the torque transmitted from the second drive unit to the second winding member, not only can the structure of the medium winding device be simplified, The cost of the medium winding device can be reduced.

  And since it is not necessary to use a torque adjustment mechanism and it is not necessary to adjust a torque according to the state of residue, the operativity of a medium winding apparatus can be improved.

It is a perspective view of a dregs raising part in a 1st embodiment of the present invention. It is a front view of the printing winding unit in the 1st embodiment of the present invention. It is a perspective view of the drive mechanism of the idle roller in the 1st Embodiment of this invention. It is a control block diagram of the roll paper winding device in the first embodiment of the present invention. It is a figure for demonstrating operation | movement of the printing winding unit in the 1st Embodiment of this invention. It is a figure for demonstrating the rising characteristic of the winding speed and the actual scrap raising speed when the winding motor and the scrap raising motor in the 2nd Embodiment of this invention are driven. It is a figure which shows the winding speed control apparatus in the 2nd Embodiment of this invention. It is a figure for demonstrating operation | movement of the printing winding unit in the 2nd Embodiment of this invention. It is a 1st time chart for demonstrating the example of operation | movement of the winding speed control apparatus when the roll paper winding diameter in the 2nd Embodiment of this invention is small. It is a 2nd time chart for demonstrating the example of operation | movement of the winding speed control apparatus when the roll paper winding diameter in the 2nd Embodiment of this invention is small. It is a time chart for demonstrating the example of operation | movement of the winding speed control apparatus in case the roll paper winding diameter in the 2nd Embodiment of this invention is large.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a printing winding unit including a printer as an image forming apparatus, a paper feeding device disposed adjacent to the printer, and a roll paper winding device as a medium winding device, and a printing winding unit were used. A roll paper winding method as a medium winding method will be described.

  FIG. 1 is a perspective view of a residue raising portion in the first embodiment of the present invention, FIG. 2 is a front view of a print winding unit in the first embodiment of the present invention, and FIG. 3 is a first view of the present invention. It is a perspective view of the drive mechanism of the idle roller in an embodiment.

  In the figure, P is a base paper made of continuous paper formed by sticking a release paper coated with an adhesive on the back side to a backing sheet, and half-cutting a predetermined portion of the release paper into a label shape, Pa is The residue Pb removed from the base paper P is a label paper body having a plurality of labels on the mount after the residue Pa is removed.

  Reference numeral 10 denotes a printing take-up unit. The print take-up unit 10 is disposed adjacent to the paper feeding device 11 and a paper feeding device (feeder) 11 as a raw paper supply unit for feeding the raw paper P. The printer 12 that performs printing on the base paper P sent from the paper feeding device 11 and the printer 12 that is disposed adjacent to the printer 12 and receives the base paper P that is printed and discharged from the printer 12. A roll paper take-up device 13 is provided for removing the waste Pa from the paper, winding the waste Pa into a roll, and winding the label paper main body Pb into a roll.

  The paper feeding device 11 includes a paper feeding roller 81 that is rotatably arranged, and a roll paper 82 is set on the paper feeding roller 81. The roll paper 82 is formed by winding the base paper P around the winding core 83.

  The printer 12 includes a printing unit (not shown) in the main body of the printer 12, that is, in the apparatus main body. The base paper P fed from the paper feeding device 11 is sent to the printer 12, printed by the printing unit, and then discharged out of the printer 12 through a discharge port 91 formed in the housing Cs. The casing Cs is provided with a panel unit 12a as an operation unit for operating the printer 12. The panel unit 12a includes a conveyance amount of the base paper P in the printer 12, and from the printer 12. A button (not shown) is provided as a setting unit for arbitrarily setting a feed amount, which is a discharge amount of the discharged base paper P.

  The roll paper take-up device 13 protrudes from the front panel 131 of the housing Hs and is rotatably arranged. The first take-up member for taking up the label paper main body Pb in a roll shape along with the rotation. As a take-up roller 14 and a label paper main body Pb, in the conveying direction of the label paper main body Pb, it is disposed so as to protrude from the front panel 131 and to be rotatable so as to apply tension to the base paper P. An idle roller 16 as a rotational friction member as a first tension applying member, and is disposed so as to protrude from the front panel 131 and face the idle roller 16 so as to peel off the residue Pa from the mount on the base paper P. The peeling bar 84 as the peeling member, the idle roller 16 and the peeling bar 84 in the conveying direction of the label paper main body Pb. On the upstream side, it is protruded from the front panel 131, is rotatably arranged in the vertical direction along the slit 17 formed in the housing Hs, and is vertically moved by the tension applied to the base paper P. And a tension bar as a take-up timing generation member as a second tension applying member that applies tension to the label paper main body Pb and generates the take-up timing of the label paper main body Pb with respect to the take-up roller 14 18. A waste raising as a second take-up member that is disposed so as to be rotatable by protruding from the front panel 131 and winds up the waste Pa peeled off from the mount by the peeling bar 84 along with the rotation. A roller 86 and the like are provided.

  The take-up roller 14 accommodates the label paper body Pa from which the waste Pa is removed in a roll shape.

  The tension bar 18 is positioned below by its own weight, and the position is changed according to the tension applied to the base paper P between the printer 12 and the idle roller 16. That is, the tension bar 18 is raised when the tension is applied to the base paper P, and is lowered by its own weight when no tension is applied to the base paper P.

  The take-up roller 14 extends in the width direction of the label paper main body Pb, and is provided at a roller portion 141 that is rotatably arranged around the take-up shaft sh1 and at both edges of the roller portion 141. And an annular plate portion 142 formed to protrude outward in the radial direction. The annular plate portion 142 prevents the label paper body Pb from meandering in the width direction when the take-up roller 14 is rotated.

  Further, the take-up roller 14 is rotated by driving a take-up motor (M) 28 (FIG. 4), which will be described later, as a first drive unit and as a take-up drive unit. For this purpose, the output shaft of the winding motor 28 and the roller portion 141 are connected via a gear mechanism (not shown) as a rotation transmission system. The take-up roller 14, the take-up motor 28, the gear mechanism, and the like constitute a label paper main body take-up unit.

  The idle roller 16 extends in the width direction of the base paper P, and is coated on a roller portion 161 that is rotatably arranged around the center axis sh2 and an outer peripheral surface of the roller portion 161, and has a friction coefficient. A high friction material 21 made of a large material is provided. Accordingly, when the label paper main body Pb is conveyed along with being taken up by the take-up roller 14, the conveyance speed (linear speed) of the label paper main body Pb on the idle roller 16 and the peripheral speed of the idle roller 16 are: The idle roller 16 is rotated without sliding with respect to the label paper main body Pb as the label paper main body Pb is conveyed. Therefore, in the present embodiment, polyurethane rubber is used as the high friction material 21. A material having a high friction coefficient other than rubber can be used as the high friction material.

  Further, in the present embodiment, when the position of the tension bar 18 on the slit 17 and the diameter of the roll paper in the take-up roller 14, that is, the roll paper take-up diameter, etc., are applied to the label paper main body Pb. In order not to change the tension, a certain load is applied to the idle roller 16 that is rotated as the label paper main body Pb is conveyed.

  For this purpose, a frame Fr is attached to the front panel 131 of the housing Hs in the housing Hs, and a tension adjusting device 164 is provided in connection with the idle roller 16 in the frame Fr. The tension adjusting device 164 is disposed on a gear g1 attached to the rear end of the roller portion 161 on the central axis sh2 and a central axis sh5 extending in parallel with the central axis sh2, and is engaged with the gear g1. And a torque limiter 22 as a first tension adjusting member disposed on the gear g2 and disposed on the center shaft sh5. In the present embodiment, the torque limiter 22 is a magnet type torque limiter using a permanent magnet, and a load of 400 gf is applied to the idle roller 16 on the surface of the idle roller 16 by the magnetic force of the permanent magnet. Given.

  Therefore, even if the position of the tension bar 18 on the slit 17 and the roll paper winding diameter of the winding roller 14 change, a constant tension is applied to the base paper P. The hardness can be made uniform. Further, when the rotating take-up roller 14 is stopped, the label paper main body Pb on the idle roller 16 is wound at the speed (linear speed) of the label paper main body Pb taken up by the take-up roller 14. It can be prevented that the sheet is conveyed at a conveyance speed faster than the taking speed Vr.

  The gears g1 and g2 constitute a rotation transmission system. In this embodiment, the torque limiter 22 is arranged on the central axis sh5. However, the torque limiter 22 can be arranged on the central axis sh2.

  By the way, the waste raising roller 86 includes a waste raising and winding portion 181 that extends in the width direction of the waste Pa and is rotatably arranged around the winding shaft sh13.

  The dregs raising roller 86 is rotated by driving a dregs raising motor (M) 182 as a second driving unit and as a dash raising driving unit. For this purpose, the output shaft sh8 of the residue raising motor 182 and the residue raising winding portion 181 are connected via the rotation transmission mechanism 184.

  The rotation transmission mechanism 184 is disposed on a gear g8 disposed on the output shaft sh8, a central shaft sh9 extending in parallel with the output shaft sh8, and engaged with the gear g8, the gear g9, and the central shaft sh9. Is disposed at one end of a central axis sh10 extending in parallel with the gear g9, and is disposed on a central axis sh11 extending in parallel with the central axis sh10 and disposed at the other end of the central axis sh10. A gear g11a meshed with a provided gear g10b, a gear g12 disposed at one end of a central shaft sh12 extending in parallel with the central shaft sh11, and meshed with a gear g11b disposed adjacent to the gear g11a, Between the gear g13 disposed on the winding shaft sh13 and meshed with the gear g12, and between the residue raising motor 182 and the residue raising roller 86, In the form of facilities includes a gear g10a on the central axis SH10, the torque limiter 122 as a second tensioning member disposed between G10b. In the present embodiment, the torque limiter 122 is a magnet type torque limiter using a permanent magnet.

  When a predetermined load (torque) is applied to the residue raising roller 86, the torque limiter 122 slips, and the residue raising motor 182 side and the residue raising roller 86 side of the torque limiter 122 are rotated relative to each other, and the residue Pa A certain tension is applied to the.

  Further, the scrap raising motor 182 has a maximum speed of the winding speed Vr assumed in the winding roller 14, that is, a winding speed when the roll paper winding diameter in the winding roller 14 is maximum (hereinafter referred to as “maximum winding speed”). When the speed is referred to as Vmax, the residue Pa can be wound around the residue raising roller 86 by the residue raising roller 86 at a speed (linear speed) faster than the maximum take-up velocity Vmax, that is, at the residue raising speed. Are driven at a constant rotation speed Nk set in advance. In this case, when a predetermined load is applied to the take-up shaft sh13, the torque limiter 122 slips and the gears g10a and g10b are relatively rotated. As a result, the waste lifting speed at which the waste Pa is actually wound up by the waste raising roller 86, that is, the actual waste raising speed Vk becomes equal to the winding speed Vr of the take-up roller 14.

  The residue raising roller 86, the residue raising motor 182 and the rotation transmission mechanism 184 constitute a residue raising portion.

  It should be noted that, as a first operation element for starting the roll paper winding device 13 when the operator presses a predetermined portion of the front panel 131, in the present embodiment, above the winding roller 14. A start switch 88 and a stop switch 89 as a second operation element for stopping the roll paper take-up device 13 when pressed by an operator are provided.

  FIG. 4 is a control block diagram of the roll paper winding device in the first embodiment of the present invention.

  In the figure, 17 is a slit, 18 is a tension bar which is arranged to be movable in the vertical direction along the slit 17, and the tension bar 18 is formed in the slit 17 as the winding motor 28 is driven or stopped. Can be raised or lowered along.

  Further, the tension bar 18 includes a roller portion 19 that extends in the width direction of the shaft sh21 and the base paper P (FIG. 2) and is rotatably arranged around the shaft sh21 as a rotation center, and the base paper P is conveyed. As you go, you can rotate around.

  A light shielding plate 29 as a detected element for detecting the position of the tension bar 18 is attached to the tension bar 18 so as to extend in the vertical direction. The light shielding plate 29 moves in the vertical direction together with the tension bar 18. Be made. In the housing Hs, a plurality of bar detection sensors Si (i = 1, 2,..., 5) as position detection members for detecting the position of the tension bar 18 are arranged along the slits 17 at a predetermined pitch. Arranged. Each bar detection sensor Si includes a light emitting portion disposed to face one surface of the light shielding plate 29 and a light receiving portion disposed to face the other surface of the light shielding plate 29, and emits light by the light emitting portion. The light is turned off when the received light is received by the light receiving unit, and turned on when the light emitted by the light emitting unit is blocked by the light shielding plate 29 and is not received by the light receiving unit. In the present embodiment, the light shielding plate 29 is used, and is turned on when the light emitted by the light emitting unit is shielded by the light shielding plate 29 and is not received by the light receiving unit. The light emitted from the light emitting unit is reflected by the reflecting plate and can be turned on when received by the light receiving unit.

  The sensor output of the bar detection sensor Si, that is, ON / OFF is sent to the control unit 30. The control unit 30 determines the position of the tension bar 18 based on the ON / OFF of the bar detection sensor Si, and the tension bar The winding motor 28 and the residue raising motor 182 are driven or stopped according to the position 18. That is, in the present embodiment, the label paper main body Pb is wound around the take-up roller 14 by repeating the rotation and stop of the take-up roller 14 in the roll paper take-up device 13, and the scrap raising roller 86 is rotated and stopped. By repeating, the waste Pa is wound around the waste raising roller 86.

  Further, the control unit 30 determines whether or not the driving condition of the winding motor 28 is established at a position where the tension bar 18 is set a predetermined distance above the lowest position RL in the slit 17, that is, a lower position. In this embodiment, the tension bar 18 is set in the slit 17 to determine whether or not the bar detection sensor S5 is turned on and whether or not the stop condition of the winding motor 28 is satisfied. In this embodiment, it is determined whether or not all the bar detection sensors S1 to S5 are turned off.

  As the winding motor 28 and the residue raising motor 182, a DC motor capable of generating a stable torque with respect to an input current is used.

  Next, the operation of the print winding unit 10 will be described.

  FIG. 5 is a diagram for explaining the operation of the print winding unit according to the first embodiment of the present invention.

  First, when the operator sets the base paper P in the paper feeding device 11 (FIG. 2), operates the panel unit 12a of the printer 12 and instructs the supply of the base paper P, the base paper P is conveyed through the printer 12, Predetermined printing is performed by the printing unit, and is discharged out of the printer 12 from the discharge port 91. When the base paper P is supplied for a length sufficient to tape the label paper main body Pb to the take-up roller 14, the operator passes the base paper P between the idle roller 16 and the peeling bar 84, and the base paper The scrap Pa is turned from P, the tip of the scrap Pa is attached to a predetermined portion of the scrap raising roller 86, and the tip of the label paper main body Pb is taped to the take-up roller 14. In addition, since the adhesive is applied to the back surface of the waste Pa, it is not necessary to tape the waste Pa.

  Subsequently, the operator manually turns the take-up roller 14 and the residue raising roller 86 so that no slack is formed on the base paper P between the printer 12 and the idle roller 16, and stretches the residue Pa and the label paper body Pb. Put it in a state. As a result, the tension bar 18 is placed at the uppermost position RU (the lower ends of the tension bar 18 and the light shielding plate 29 are placed at the uppermost position RU).

  When the operator depresses the start switch 88 on the front panel 131 and notifies the control unit 30 of the completion of the setting of the waste Pa and the label paper main body Pb, the control unit 30 sends the print data to the printing unit at timing t0. Send and start printing.

  Thus, printing is performed on the base paper P by the printer 12 at a predetermined printing speed Vd, and the base paper P is discharged from the printer 12 at a discharge speed equal to the printing speed Vd, but the winding motor 28 is stopped. Therefore, the base paper P between the printer 12 and the idle roller 16 is loosened, and the tension bar 18 moves downward due to its own weight. Along with this, the light shielding plate 29 moves downward, and the bar detection sensors S1 to S4 are sequentially turned on.

  When the tension bar 18 reaches the lower position at the timing t1 and the bar detection sensor S5 is turned on, the driving condition of the winding motor 28 is established, and the control unit 30 detects the winding motor 28 and the cascading at the timing t2. The raising motor 182 is driven.

  If the bar detection sensor S5 is turned on when the tension bar 18 reaches the lowest position RL, the tension bar 18 remains the same until the take-up motor 28 and the residue raising motor 182 are driven. The base paper P is loosened while being placed in the position, and tension cannot be applied to the base paper P. Therefore, in the present embodiment, when the tension bar 18 reaches the lower position, the winding motor 28 and the scrap raising motor 182 are driven.

  In this case, the winding motor 28 is driven so that the winding speed Vr of the label sheet main body Pb when the winding roller 14 is rotated is faster than the printing speed Vd in the printer 12.

  Further, the residue raising motor 182 is driven at the rotational speed Nk so that the residue Pa can be wound around the residue raising roller 86 at a residue raising speed faster than the maximum winding speed Vmax assumed in the winding roller 14. However, when a predetermined load is applied to the take-up shaft sh13, the torque limiter 122 slips, and the actual scrap raising speed Vk and the take-up speed Vr become equal.

  As a result, the slack of the base paper P between the printer 12 and the idle roller 16 is reduced, and the tension bar 18 moves upward against its own weight. Along with this, the shading plate 29 moves upward, and the bar detection sensors S5, S4, S3, S2, and S1 are sequentially turned off.

  When the tension bar 18 reaches the upper position and all the bar detection sensors S1 to S5 are turned off, the stop condition for the winding motor 28 is established, and the control unit 30 determines that the winding motor 28 and the scrap raising motor 182 are stopped. Stop.

  When the tension bar 18 moves downward and reaches the lower position, the control unit 30 drives the winding motor 28 and the residue raising motor 182, and when the tension bar 18 moves upward and reaches the upper position, The take-off motor 28 and the residue raising motor 182 are stopped, and these operations are repeated until printing is stopped.

  Thus, in the present embodiment, the torque limiter 122 is disposed between the residue raising motor 182 and the residue raising roller 86, and when a predetermined load is applied to the residue raising roller 86, the residue raising motor 182. Since the side and the residue raising roller 86 side are relatively rotated and a certain tension is applied to the residue Pa, the residue Pa can be stabilized and wound around the residue raising roller 86.

  Further, since it is not necessary to use a powder clutch to control the torque transmitted from the residue raising motor 182 to the residue raising roller 86, not only can the structure of the roll paper winding device 13 be simplified, but also the The cost of the taking device 13 can be reduced.

  It is not necessary to use a torque adjusting mechanism that monitors the state in which the waste Pa is wound around the waste raising roller 86 and adjusts the torque according to the state of the waste Pa. There is no need to adjust the torque by monitoring the state of Pa, and the operability of the roll paper winding device 13 can be improved.

  By the way, in the present embodiment, the drive condition of the take-up motor 28 is established, the take-up motor 28 is driven, the take-up of the label paper main body Pb is started, and the duck raising motor 182 is driven, The winding of Pa is started, the label paper body Pb is taken up at the take-up speed Vr by the take-up roller 14, and the debris Pa is taken up by the debris raising roller 86 at the actual debris raising speed Vk.

  However, when the diameter of the roll dregs 87 in which the dregs Pa is wound in the dregs raising roller 86, that is, the dwindling diameter of the dregs changes, the dregs Pa is smoothly raised when the dregs raising motor 182 is driven. In some cases, the roller 86 cannot be wound.

  Accordingly, by accelerating the winding speed Vr stepwise, it is possible to prevent the waste Pa removed from the base paper P from being wound around the winding roller 14 according to the second embodiment of the present invention. A form is demonstrated. In addition, about the thing which has the same structure as 1st Embodiment, the same code | symbol is provided and the effect of the same embodiment is used about the effect of the invention by having the same structure.

  FIG. 6 is a view for explaining the rising characteristics of the winding speed and the actual scrap raising speed when the winding motor and the scrap raising motor are driven in the second embodiment of the present invention. In the figure, the horizontal axis represents time, and the vertical axis represents winding speed Vr and actual scrap raising speed Vk.

  In the figure, L1 represents the winding speed Vr in the first embodiment when the winding motor 28 (FIG. 4) as the first driving unit and as the winding driving unit is driven. A line L2 indicating a transition indicates an actual scrap raising speed Vk when the scrap raising motor 182 as the second driving portion and the scrap raising driving portion is driven when the scrap winding diameter is small. L3 is a line indicating the transition of the actual scrap raising speed Vk when the scrap raising motor 182 is driven when the scrap winding diameter is large, and L4 is a line when the winding motor 28 is driven. In the embodiment, a line indicating the transition of the winding speed Vr, Vd is a printing speed in the printer 12, and Vrm is a target speed of the winding speed Vr set to a value faster than the printing speed Vd.

  In the present embodiment, as in the first embodiment, a second tension adjusting member is provided between the waste raising motor 182 and the residue raising roller 86 (FIG. 1) as the second winding member. A torque limiter 122 is provided, and a predetermined load is applied to the take-up shaft sh13, so that the torque limiter 122 slips, and the actual scrap raising speed Vk and the take-up speed Vr become equal.

  When the scrap winding diameter is small, the moment of inertia by the roll scrap 87 is small. Therefore, when the scrap raising motor 182 is driven, the rise of the actual scrap raising speed Vk may be accelerated as shown by the line L2. When the winding diameter is large, the moment of inertia due to the roll residue 87 is large. Therefore, when the residue raising motor 182 is driven, the rise of the actual residue raising speed Vk may be delayed as shown by the line L3.

  On the other hand, only a gear mechanism is provided between the winding motor 28 and the winding roller 14 as the first winding member, and no torque limiter is disposed. Since a DC motor is used as the take-up motor 28, the rising of the take-up speed Vr does not change as shown by the line L1, whether the roll paper take-up diameter of the take-up roller 14 is small or large.

  Therefore, when the roll paper winding diameter and the scrap winding diameter are increased, when the winding motor 28 and the scrap lifting motor 182 are driven, the rise of the actual scrap raising speed Vk is slower than the rising of the winding speed Vr. As a result, the waste Pa removed from the base paper P may not be taken up by the take-up roller 86 but may be taken up by the take-up roller 14. In this case, the waste Pa is cut.

  Therefore, in the present embodiment, as indicated by a line L4, a plurality of, for example, eight stages kj (j = 1, 2,...) From the side where the winding speed Vr is slower than the printing speed Vd. 8), the acceleration is stepwise, and the rise of the winding speed Vr is artificially slowed. Note that the winding speed Vr is higher than the printing speed Vd at steps k7 and k8.

  By the way, in the winding roller 14, the winding speed Vr increases as the roll paper winding diameter increases. Therefore, based on the rotational speed of the idle roller 16 as the first tension applying member and as the rotating friction member. The winding speed Vr can be estimated.

  Next, a winding speed control device for artificially slowing up the winding speed Vr based on the rotational speed of the idle roller 16 will be described.

  FIG. 7 is a diagram showing a winding speed control apparatus according to the second embodiment of the present invention.

  In the figure, 16 is an idle roller, 23 is a slit plate attached on the central axis sh2 of the idle roller 16 and having a circular shape in which a plurality of slits 231 are formed at a predetermined interval, and 24 is the slit plate 23. A transmissive sensor 30 as a detection element for detecting the rotational speed of the idle roller 16 and as a speed detection unit, 30 is a control unit.

  The transmissive sensor 24 includes a light emitting unit 241 disposed to face one surface of the slit plate 23 and a light receiving unit 242 disposed to face the other surface of the slit plate 23, When the light receiving unit 242 receives the light emitted by the light emitting unit 241 and transmitted through the slit 231, a pulse signal as a sensor output is generated and sent to the control unit 30. The pulse signal is composed of a plurality of pulses that are turned on when the light receiving unit 242 receives light, and according to the rotational speed of the slit plate 23, that is, the time that each pulse is turned on according to the rotational speed of the idle roller 16, That is, the pulse width changes.

  Therefore, in the present embodiment, the control unit 30 estimates the winding speed Vr based on the pulse width when the driving condition of the winding motor 28 is satisfied and the winding motor 28 is driven, and the estimation is performed. The wound winding speed Vr is accelerated stepwise at each stage kj.

  For this purpose, the control unit 30 turns on a bar detection sensor Si (FIG. 4) as a second tension applying member and as a position detection member for detecting the position of the tension bar 18 as a winding timing generation member. A driving condition determination unit 34 that reads OFF and determines whether or not the driving condition of the winding motor 28 is satisfied, and a sensor output acquisition unit that reads a pulse signal of the transmission sensor 24 when the winding motor 28 is driven. Counting unit 25, target speed determination unit 26 that determines whether or not the winding speed Vr has reached the target speed Vm, and the winding motor 28 based on the determination results of the drive condition determination unit 34 and the target speed determination unit 26. A motor control unit 27 for driving is provided.

  The count unit 25 reads the pulse signal of each stage kj from the transmission sensor 24 every switching time of 200 [ms], and count value Cj (j = 1, 2,...) Representing one cycle of the pulse signal of each stage kj. .., 8) are counted at a control period of 1 [ms] to obtain a count value Cj. The target speed determination unit 26 generates the rotational speed Nj (j = 1, 2,..., 8) of the winding motor 28 in order to accelerate the winding speed Vr stepwise at each stage kj. The count value Cj is read from the count unit 25, and the count value Cj is compared with a preset threshold value Cth1 (52 in the present embodiment) and Cth2 (62 in the present embodiment). Then, it is determined whether the winding speed Vr has reached the target speed Vm.

  The motor control unit 27 drives the winding motor 28 when the driving condition is satisfied, and stops the stepwise acceleration by the winding motor 28 when the winding speed Vr reaches the target speed Vm.

  Next, the operation of the print winding unit 10 will be described.

  FIG. 8 is a diagram for explaining the operation of the print winding unit according to the second embodiment of the present invention. FIG. 8A is a diagram for explaining the operation of the print winding unit when the printing speed is high. FIG. 8B is a diagram for explaining the operation of the print winding unit when the printing speed is low.

  First, when the operator sets the base paper P in the paper feeding device 11 as the base paper supply unit, operates the panel unit 12a as the operation unit of the printer 12 as the image forming apparatus, and instructs the supply of the base paper P, The base paper P is conveyed through the printer 12 and discharged from the discharge port 91 to the outside of the printer 12. Next, the operator attaches the tip of the residue Pa to a predetermined portion of the residue raising roller 86 and tapes the tip of the label paper main body Pb to the take-up roller 14.

  Subsequently, the operator manually turns the take-up roller 14 and the residue raising roller 86 so that the residue Pa and the label paper main body Pb are stretched. As a result, the tension bar 18 is placed at the uppermost position RU.

  Then, when the operator presses the start switch 88 as the first operation element on the front panel 131 to notify the control unit 30 of the completion of the setting of the waste Pa and the label paper main body Pb, the control unit 30 performs the timing t10. To send the print data to the printing section and start printing.

  As a result, the printer 12 performs printing on the base paper P at a predetermined printing speed Vd, and the base paper P is discharged from the printer 12. However, since the take-up motor 28 is stopped, the printer 12 and the idle roller 16, the base paper P is loosened, and the tension bar 18 moves downward due to its own weight. Along with this, the light shielding plate 29 as a detected element for detecting the position of the tension bar 18 moves downward, and the bar detection sensors S1 to S5 are sequentially turned on.

  When the tension bar 18 reaches the lower position set by the distance set according to the printing speed Vd from the lowest position RL at the timing t11, and the printing speed in FIG. When the sensor S3 has a slow printing speed in FIG. 8B and the bar detection sensor S4 is turned on, the driving condition of the winding motor 28 is established, and the control unit 30 detects that the winding motor 28 and the cascading belt at timing t12. The raising motor 182 is driven.

  When the bar detection sensor S5 is turned on when the tension bar 18 reaches the lowest position RL, the tension bar 18 is placed at the same position until the take-up motor 28 and the residue raising motor 182 are driven. As it is, the base paper P is slackened and tension cannot be applied to the base paper P. Therefore, as in the first embodiment, the winding motor 28 and the residue raising motor 182 are driven when reaching a lower position set a predetermined distance above the lowest position RL. ing. Therefore, the stroke of the tension bar 18 can be prevented from changing, and the winding hardness of the roll paper in the winding roller 14 can be made uniform.

  In this case, the take-up motor 28 accelerates the take-up speed Vr stepwise in the eight stages kj, is slower than the print speed Vd in the stages k1 to k6, and is faster than the print speed Vd in the stages k7 and k8. Like that.

  Therefore, when the printing speed of FIG. 8A is high, the tension bar 18 continues to be downward from the time when the bar detection sensor S3 is turned on until the time when the bar detection sensor S5 is turned on at timing t13. It starts to move upward at timing t14. Further, when the printing speed in FIG. 8B is low, the tension bar 18 continues downward from the time when the bar detection sensor S4 is turned on until the time when the bar detection sensor S5 is turned on at timing t13. It starts to move upward at timing t14.

  Next, when the winding speed Vr is accelerated stepwise in the eight stages kj, the rotational speed Nj of the winding motor 28, the pulse signal generated by the transmission type sensor 24, and the counting unit 25 are counted. The transition of the count value Cj (j = 1, 2,..., 8) will be described.

  FIG. 9 is a first time chart for explaining an example of the operation of the take-up speed control device when the roll paper take-up diameter is small in the second embodiment of the present invention, and FIG. 10 is a second time chart of the present invention. FIG. 11 is a second time chart for explaining an example of the operation of the winding speed control device when the roll paper winding diameter in the embodiment is small, and FIG. 11 shows the roll paper winding diameter in the second embodiment of the present invention. It is a time chart for demonstrating the example of operation | movement of the winding speed control apparatus in the case of big.

  In this case, the control unit 30 updates each stage kj every time a preset switching time, in the present embodiment, 200 [ms] elapses, and in each stage kj, the counting unit 25 One cycle of the pulse signal (the last cycle when a plurality of cycles can be taken during the switching time) is counted, the count value Cj is updated, and the target speed determination unit 26 determines each switching timing of the switching time. mj (j = 1, 2,..., 8), the count value Cj is compared with the thresholds Cth1 and Cth2, and it is determined whether the rotational speed Nj is to be increased (UP) or decreased (DOWN). The motor control unit 27 determines the rotation speed Nj of the motor 28 based on the determination of the target speed determination unit 26.

  The target speed determination unit 26 increases the rotational speed Nj when the count value Cj cannot be obtained and when the count value Cj is larger than 62, and decreases the rotational speed Nj when the count value Cj is smaller than 52. When the count value Cj is 52 or more and 62 or less, it is determined that the winding speed Vr has reached the target speed Vm, and the rotation speed Nj is not changed.

  When the roll paper winding diameter is small, as shown in FIGS. 9 and 10, the switching timing mj is set for every switching time of 200 [ms], and the count unit 25 can acquire the count value at the stage k1. In this case, the motor control unit 27 sets the rotation speed N1 to the initial value of 525 [rpm].

  Subsequently, at the stage k2, the count unit 25 acquires the count value C1 (= 152), and the motor control unit 27 increases the rotational speed N2 because the count value is not acquired at the stage k1, so that 579 [rpm ].

  In step k3, the count unit 25 acquires the count value C2 (= 129), and the motor control unit 27 increases the rotational speed N3 to 685 [rpm] because the count value C1 is larger than 62. At k4, the count unit 25 acquires the count value C3 (= 108), and the motor control unit 27 increases the rotation speed N4 to 812 [rpm] because the count value C2 is greater than 62, and at step k5, The count unit 25 obtains the count value C4 (= 91), and the motor control unit 27 increases the rotational speed N5 to 966 [rpm] because the count value C3 is greater than 62. In step k6, the count unit 25 Acquires the count value C5 (= 77), and since the count value C4 is greater than 62, the motor control unit 27 increases the rotational speed N6, and 114 [Rpm] In step k7, the count unit 25 acquires the count value C6 (= 64), and the motor control unit 27 increases the rotational speed N7 because the count value C5 is greater than 62, and 1363 [rpm]. In step k8, the count unit 25 acquires the count value C7 (= 54), and the motor control unit 27 increases the rotational speed N8 to 1631 [rpm] because the count value C6 is greater than 62.

  In this case, since the count value C7 is 62 or less and 52 or more at the stage k8, the control unit 30 determines that the winding speed Vr has reached the target speed Vm, and the motor control unit 27 The rotation speed N8 is not changed until 16 reaches the uppermost position RU, and is set to 1631 [rpm].

  Further, when the roll paper winding diameter is large, as shown in FIG. 11, the switching timing mj is set for every switching time of 200 [ms], and in the stage k1, the counting unit 25 counts the count value C1 (= 69). The motor control unit 27 sets the rotation speed N1 to 525 [rpm] which is an initial value.

  Subsequently, at step k2, the count unit 25 acquires the count value C2 (= 63), and the motor control unit 27 increases the rotational speed N2 to 579 [rpm] because the count value C1 is greater than 62. .

  In step k3, the count unit 25 acquires the count value C3 (= 53), and the motor control unit 27 increases the rotational speed N3 to 685 [rpm] because the count value C2 is greater than 62.

  In this case, since the count value C3 is 62 or less and 52 or more at the stage k3, the control unit 30 determines that the winding speed Vr has reached the target speed Vm, and the motor control unit 27 The rotational speed N3 is kept unchanged at 685 [rpm] until 18 reaches the uppermost position RU.

  Thus, in the present embodiment, the winding speed Vr at which the label paper body Pb is wound around the winding roller 14 when the winding motor 28 is driven is accelerated stepwise. The rise of the speed Vr can be made slower than the rise of the actual scrap raising speed Vk when the scrap winding diameter becomes the largest. Therefore, the waste Pa removed from the base paper P is not taken up by the take-up roller 14, and the waste Pa can be prevented from being cut.

  In each of the above-described embodiments, the printer 12 is disposed in the print winding unit 10, but an image forming apparatus such as a copying machine, a facsimile, or a multifunction peripheral is disposed in place of the printer 12. Can do.

  The present invention is not limited to the above embodiments, and various modifications can be made based on the gist of the present invention, and they are not excluded from the scope of the present invention.

13 Roll Paper Winding Device 14 Winding Roller 28 Winding Motor 86 Waste Lifting Roller 122 Torque Limiter 182 Waste Lifting Motor P Base Paper Pa Waste Pb Label Paper Main Body

Claims (14)

(A) a first winding member that is rotatably arranged and is formed by peeling off a residue, and for winding a label paper body having a plurality of labels on a mount in a roll shape;
(B) a first drive unit that rotates the first winding member to wind up the label paper body;
(C) a second winding member that is rotatably disposed and winds the residue peeled off from the mount in a roll shape;
(D) a second driving unit that rotates the second winding member to wind up the waste;
(E) It is disposed between the second driving unit and the second winding member, and when a predetermined load is applied to the second winding member, the second driving unit side and the second winding unit A medium winding apparatus comprising: a tension adjusting member that rotates relative to the winding member side and applies a constant tension to the residue.   2. The tension adjusting member according to claim 1, wherein a scrap lifting speed at which the scrap is wound around the second winding member is equal to a winding speed at which the label paper body is wound around the first winding member. Media take-up device. (A) a tension bar that is movably arranged in the vertical direction and is raised or lowered based on a tension applied to the base paper;
(B) a position detection member for detecting the position of the tension bar;
(C) a control unit that drives the first driving unit at a lower position set a predetermined distance above the lowest position of the tension bar based on the sensor output of the position detection member. Or the medium winding apparatus of 2.   The medium winding device according to claim 3, wherein the lower position is set according to a printing speed in the image forming apparatus.   5. The control unit according to claim 1, wherein when the first driving unit is driven, the control unit gradually accelerates a winding speed at which the label paper main body is wound around the first winding member. The medium winding device according to item.   The medium winding device according to claim 5, wherein the rising of the winding speed is made slower than the rising of the scrap raising speed at which the scrap is wound around the second winding member.   The medium winding device according to claim 5 or 6, wherein the control unit stops the stepwise acceleration of the winding speed by the first driving unit when the winding speed reaches a target speed. (A) A label paper body formed by driving the first drive unit and peeling off the residue and having a plurality of labels on the mount is wound around the first winding member in a roll shape,
(B) The second drive unit is driven, and the residue peeled off from the mount is wound up in a roll shape around the second winding member,
(C) When a predetermined load is applied to the second winding member, a second tension adjustment member disposed between the second driving unit and the second winding member causes the second winding member to A medium winding method characterized by relatively rotating the drive unit side and the second winding member side to apply a certain tension to the residue.   9. The tension adjusting member according to claim 8, wherein a scrap lifting speed at which the scrap is wound up by the second winding member is equal to a winding speed at which the label paper main body is wound by the first winding member. Media winding method. (A) The position detection member detects the position of the tension bar arranged to be movable in the vertical direction,
(B) The first drive unit is driven at a lower position set a predetermined distance above the lowest position of the tension bar based on the sensor output of the position detection member. Media winding method.   The medium winding method according to claim 10, wherein the lower position is set according to a printing speed in the image forming apparatus.   The medium according to any one of claims 8 to 11, wherein when the first drive unit is driven, a winding speed at which the label paper body is wound around the first winding member is accelerated stepwise. Winding method.   The medium winding method according to claim 12, wherein the rising of the winding speed is made slower than the rising of the scrap raising speed at which the scrap is wound around the second winding member.   The medium winding method according to claim 12 or 13, wherein when the winding speed reaches a target speed, stepwise acceleration of the winding speed by the first drive unit is stopped.

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