JP2012201491A - Winding device and inspection device using the same - Google Patents

Abstract

In a winding device that winds up a print medium and winds it into a roll, the tightness of the print medium wound in a roll is brought close to uniform.
The winding device includes a winding shaft that is driven by a motor to rotate. The winding device winds up a print medium, a first flange fixed to the winding shaft, and a winding shaft. A second flange that is detachable and guides a print medium wound around the winding portion between the first flange and the second flange when attached to the winding shaft; A winding amount detection unit that detects the winding amount of the print medium wound up by the printer, and a control unit that controls the rotational speed or torque of the motor based on the detection result of the winding amount detection unit.
[Selection] Figure 1

Description

  The present invention relates to a winding device that winds a label temporarily attached to a mount or a printing medium such as a belt-like sheet for tag production into a roll. Furthermore, the present invention relates to an inspection apparatus that reads print information such as barcodes and characters printed on a print medium and verifies the print information, and winds the print medium and rolls it into a roll.

  In a printer that prints printing information such as barcodes and characters on labels and tags, as a print medium (hereinafter also referred to as “paper”), for example, a predetermined length on a long strip (separator) A label continuum in which labels are temporarily attached at a predetermined interval or a strip-shaped sheet for tag production is used. In order to wind up the paper discharged from the printer, a winding device that winds the paper around a rotating winding unit and winds the paper into a roll is used.

  However, in the conventional winding device, the setting of the rotational speed and torque of the winding unit cannot be changed. Therefore, when the paper is taken up by the take-up portion and the radius of the roll (winding radius) is increased, the tension applied to the paper when the paper is taken up at the same rotational speed and torque setting as at the start of winding. There was a problem that the tightening of the paper wound in a roll shape did not become uniform.

  As a related technique, Patent Document 1 discloses that the tension applied to a belt-like continuous body such as a rolled label, a tag continuous body, and a carbon continuous body is changed according to the roll diameter, and the inner diameter of the core member is Even if different, a belt-like continuous body supply device capable of keeping tension as constant as possible is disclosed.

  This belt-like continuous body supply device is configured to rotatably mount a rolled belt-like belt-like continuous body and feed it downstream, and to detect the medium type of the belt-like continuous body attached to the supply portion. Means, and a roll diameter remaining amount detecting means for detecting the roll diameter remaining amount of the belt-like continuous body attached to the supply unit in a plurality of stages, and a rotation contacting the peripheral surface of the belt-like continuous body attached to the supply unit A belt-like continuous belt equipped with a flexible tensioning roller and a biasing means for biasing the tensioning roller to the belt-like continuous body following the roll diameter of the belt-like continuous body that is drawn out and contracted, and attached to the supply unit The tension generating means for applying a constant tension to the body, the medium type of the belt-like continuous body, and the rotation direction of the tension applying roller in the feeding direction or the feeding reverse direction for each detected stage of the remaining roll diameter. The setting And means, based on the rotation direction of the set tensioning roller in the storage means, and control means for controlling via the tension generating means in the direction or feeding reverse feeding a strip continuum.

  According to Patent Document 1, in the belt-like continuous body supply device, the tension applied to the paper can be made close to a certain level. However, Patent Document 1 does not disclose a winding device having such a function. In the winding device, the winding of the paper wound in a roll shape cannot be made uniform unless the tension applied to the paper by the winding unit is kept close to a certain level.

Japanese Patent Laying-Open No. 2010-6546 (paragraphs 0004-0005)

  Therefore, in view of the above points, the present invention provides a winding device or an inspection device that winds a print medium and winds it in a roll shape, and uniformly closes the tightening of the print medium wound in a roll shape. Objective.

  In order to solve the above-described problems, a winding device according to one aspect of the present invention is a winding device that winds up a print medium and winds it into a roll, and the winding shaft is driven and rotated by a motor. A winding portion for winding the print medium, a first flange fixed to the winding shaft, and a second flange detachable from the winding shaft, when attached to the winding shaft A second flange for guiding the print medium taken up by the take-up unit between the first flange and a take-up amount detecting unit for detecting the take-up amount of the print medium taken up by the take-up unit; And a control unit for controlling the rotational speed or torque of the motor based on the detection result of the winding amount detection unit.

  An inspection apparatus according to one aspect of the present invention optically reads a winding apparatus according to any aspect of the present invention and print information that is incorporated in the winding apparatus and printed on a print medium. And a verification unit that verifies the print information. After inspecting the print information printed on the print medium, the print medium is wound up and wound into a roll.

  According to one aspect of the present invention, a winding amount detection unit that detects a winding amount of a print medium wound up by a winding unit, and a rotation speed of a motor based on a detection result of the winding amount detection unit By providing the control unit for controlling the torque, it is possible to bring the tightness of the paper wound in a roll shape closer to uniform.

It is a schematic diagram which shows the state in which the winding apparatus which concerns on one Embodiment of this invention is connected to the printer. It is a perspective view which shows the structure of the periphery of the winding part shown in FIG. It is the perspective view which looked at the structure around the winding-up part shown in FIG. 1 from the back side of the housing | casing. It is the partial cross section figure which looked at the structure of the periphery of the winding part shown in FIG. 1 from the side surface side of the housing | casing. It is a figure for demonstrating the detection operation | movement of the paper sensor in one Embodiment of this invention. It is a flowchart which shows the operation example of the winding apparatus which concerns on one Embodiment of this invention. It is a front view which shows the inspection apparatus which concerns on one Embodiment of this invention. It is a perspective view showing an inspection device concerning one embodiment of the present invention. It is sectional drawing which shows the detailed internal structure of the verification part in one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same referential mark is attached | subjected to the same component and the overlapping description is abbreviate | omitted.
FIG. 1 is a schematic diagram illustrating a state in which a winding device according to an embodiment of the present invention is connected to a printer. The printer 20 uses a thermal head to print on a print medium (paper) such as a label temporarily attached to a mount or a belt-like sheet for tag production. In the following, a case where printing is performed on a label temporarily attached to a mount will be described as an example.

  The label continuous body 1 is set on the paper supply shaft 21 of the printer 20. The label continuous body 1 is configured by temporarily attaching a plurality of labels 2 to a mount 3 so as to be peelable. As the label 2, for example, a thermal paper that develops a specific color (such as black or red) when a certain temperature region is reached is used.

  When the stepping motor 22 rotates the platen roller 23 via the belt, the label continuous body 1 is conveyed in the downstream direction (left direction in the figure). The thermal head 24 has a set of fine heating elements that generate heat when an electric current is passed, and is arranged to face the platen roller 23 with the label continuous body 1 interposed therebetween. Printing is performed by applying a voltage to these heat generating elements to cause the heat generating elements to generate heat by causing a current to flow, and by developing a color on the surface of the label 2 of the label continuum 1. The printed continuous label 1 is discharged from the paper discharge port of the printer 20 to the outside.

  The winding device 10 is disposed adjacent to the printer 20 and winds up the continuous label 1 discharged from the printer 20 in a roll shape. The winding device 10 includes a housing 10a, a guide roller 11, a swing roller 12, a roller position sensor 12a, an auxiliary roller 13, a motor 14, a winding unit 15, a pair of flanges 16, and a plurality of flanges 16. Paper sensors 17a to 17d, an operation unit 18 and a control unit 19 are included.

  The guide roller 11 and the auxiliary roller 13 guide the label continuous body 1 discharged from the printer 20. The swing roller 12 abuts on the label continuous body 1 spanned between the guide roller 11 and the auxiliary roller 13 to absorb the slack of the label continuous body 2. The roller position sensor 12 a detects the position of the swing roller 12.

  The swing roller 12 moves to the lowest point by its own weight or the biasing force of the tension spring. Therefore, the tension applied to the label continuum 1 can be measured by detecting the position of the swing roller 12 using the roller position sensor 12a.

  The winding unit 15 is driven by the motor 14 to rotate and winds the label continuous body 1 sent from the auxiliary roller 13. The plurality of paper sensors 17 a to 17 d constitute a winding amount detection unit that detects the winding amount of the label continuous body 1 wound around the winding unit 15. In the present embodiment, as the winding amount, the radius of the roll (winding radius) formed by winding the label continuous body 1 around the winding portion 15 is detected.

  The operation unit 18 may include an operation switch used for operating the winding device 10 and a buzzer, an LED, or the like for notifying the end of winding or occurrence of an error. The control unit 19 controls each part of the winding device 10 in accordance with various commands input by the operator using the operation unit 18 and determines the rotation speed or torque of the motor 14 based on the detection result of the winding amount detection unit. Control.

  2 is a perspective view showing the structure around the winding unit shown in FIG. 1, and FIG. 3 is a perspective view showing the structure around the winding unit shown in FIG. 1 from the back side of the housing. FIG. 4 is a partial cross-sectional view of the structure around the winding portion shown in FIG. 1 as viewed from the side of the housing.

  As shown in FIGS. 2 to 4, the winding unit 15 includes a winding shaft 15 a that is driven and rotated by a motor 14 (FIG. 1), and a winding paper tube adapter 15 b that is attached to the winding shaft 15 a. Contains. The winding shaft 15a is rotatably supported by two bearings 10b shown in FIG. A winding paper tube to which one end of the label continuous body 1 is bonded is attached to the winding paper tube adapter 15b.

  One flange 16a is fixed to the winding shaft 15a, and the other flange 16b is detachable from the winding shaft 15a. The flange 16b is attached to the take-up shaft 15a by the flange lock mechanism 16c after the take-up paper tube is mounted on the take-up paper tube adapter 15b, and the label continuous body 1 taken up by the take-up portion 15 is attached to the flange 16a. And guide between them.

  Each of the flanges 16 a and 16 b has at least one arm portion extending in the radial direction to guide the label continuum 1 wound around the winding portion 15. FIG. 2 shows a case where each of the flanges 16a and 16b has three arm portions. It is desirable that at least the back side (the casing 10a side) of the arm portions of the flanges 16a and 16b be colored with a dark color such as black to make it difficult to reflect light.

  Alternatively, it is desirable that the flange 16a is fixed to the winding shaft 15a so that the arm portion of the flange 16a has a predetermined angle with respect to a reference position in the rotation direction of the winding portion 15. Similarly, it is desirable that the mounting angle of the flange 16b with respect to the winding shaft 15a is determined so that the arm portion of the flange 16b has a predetermined angle with respect to the reference position in the rotation direction of the winding portion 15.

  As shown in FIGS. 2 and 3, the paper sensors 17 a to 17 d are located at different positions from the winding unit 15 in order to detect the winding amount of the label continuous body 1 wound around the winding unit 15 in a stepwise manner. Is arranged. Each of the paper sensors 17 a to 17 d is a reflection type optical sensor that irradiates light toward the object, detects light reflected by the object, and outputs a detection signal to the control unit 19.

  As shown in FIGS. 3 and 4, a driving pulley 15c is fixed to the winding shaft 15a. The drive pulley 15c is driven by the motor 14 via the drive belt 14a. As the motor 14, a DC motor or an AC motor can be used. For example, a DC gear motor is used. Further, when the rotational force of the winding shaft 15a is transmitted to the winding paper tube adapter 15b, the winding paper tube adapter 15b grips the inner surface of the winding paper tube and rotates the winding shaft 15a. Transmit to the paper tube.

  FIG. 5 is a diagram for explaining the detection operation of the paper sensor in one embodiment of the present invention. FIG. 5A shows a change in detection signal level when there is no label continuum in front of the paper sensor, and FIG. 5B shows a label continuum in front of the paper sensor. The change of the detection signal level in the case is shown.

  When there is no continuous label body in front of the paper sensor, as shown in FIG. 5A, the paper sensor has three arm portions provided on the flange 16a shown in FIG. Detects the light reflected by the arm when it passes the front of the paper sensor, but if the finish is difficult to reflect the light on the back side of the arm, the level of the detection signal is below the threshold small.

  On the other hand, when the label continuous body is wound around the winding unit 15 shown in FIG. 2 and the winding amount of the label continuous body increases, for example, a white label continuous body exists in front of the paper sensor. In such a situation, as shown in FIG. 5B, the level of the detection signal exceeds the threshold value. However, when the arm portion of the flange 16a passes in front of the paper sensor, the level of the detection signal becomes smaller than the threshold value.

  The control unit 19 (FIG. 1) that has received the detection signal from the paper sensor determines whether the level of the detection signal is high or low by comparing the detection signal with a threshold value. When the detection signal alternately takes the high level and the low level as shown in FIG. 5B, the control unit 19 detects the flange 16a based on the timing at which the detection signal periodically becomes the low level. A period in which the arm portion passes in front of the sheet sensor is obtained, and at the detection timings t1, t2, t3,. Note that the period in which the arm portion passes in front of the paper sensor may be obtained based on detection signals output from the respective paper sensors, or the paper sensor provided on the innermost side (shown in FIG. 2). You may obtain | require based on the detection signal output from the paper sensor 17a).

  Alternatively, when the arm portion of the flange 16a has a predetermined angle with respect to the reference position in the rotation direction of the winding unit 15, the control unit 19 detects the winding unit 15 detected by a rotation sensor (not shown). Based on the rotation phase, the period in which the arm portion of the flange 16a passes in front of the sheet sensor is obtained, and at the detection timings t1, t2, t3,. You may do it.

  In the present embodiment, since the flange 16a has three arm portions, the control unit 19 detects that the detection signal is at a high level at all three detection timings t1, t2, and t3 during one rotation of the flange 16a. In this case, it is desirable to determine that the label continuous body 1 exists in front of the paper sensor.

  In this way, while monitoring the rotational speed and phase of the flange 16a, when the arm portion of the flange 16a does not exist in front of the paper sensors 17a to 17d, the paper sensors 17a to 17d respectively output. Based on the plurality of detection signals, the winding amount of the label continuous body 1 wound around the winding unit 15 can be determined. In addition, since the rotational speed of the flange 16a becomes slow as the winding amount of the label continuous body 1 increases, the control unit 19 is wound on the winding unit 15 while following the change in the rotational speed of the flange 16a. The winding amount of the label continuous body 1 is determined.

  In the present embodiment, since the four paper sensors 17a to 17d are provided, the control unit 19 takes up the winding unit 15 based on the four detection signals output from the four paper sensors 17a to 17d. The winding amount of the label continuous body 1 can be determined in five stages. The control unit 19 sets the rotation speed of the motor 14 to be smaller or sets the torque of the motor 14 to be larger as the winding amount of the label continuous body 1 wound around the winding unit 15 increases. Also good. Further, the control unit 19 may control the rotation of the winding unit 15 based on the output signal of the roller position sensor 12 a that detects the position of the swing roller 12.

  In the case of a DC motor, the rotational speed of the motor can be controlled by an applied voltage, and the torque of the motor can be controlled by a supply current. In the case of an AC motor, the rotational speed of the motor can be controlled by the frequency of the drive signal, and the torque of the motor can be controlled by the voltage of the drive signal.

When the conveyance speed of the label continuous body 1 is v and the winding radius of the label continuous body 1 is r, the angular velocity ω (radian / second) of the winding portion 15 is expressed by the following equation (1).
ω = v / r (1)
Therefore, when the conveyance speed v of the label continuous body 1 is constant, the rotational speed of the motor 14 is set so that the angular speed ω of the winding unit 15 decreases in inverse proportion to the winding radius r of the label continuous body 1. It is necessary to set.

Further, assuming that the tension of the label continuous body 1 is T and the winding radius of the label continuous body 1 is r, the torque N of the winding portion 15 is expressed by the following equation (2).
N = r × T (2)
Therefore, when the tension T of the label continuous body 1 is made constant, the torque of the motor 14 is set so that the torque N of the winding unit 15 increases in proportion to the winding radius r of the label continuous body 1. It is necessary.

  Next, an operation example of the winding device according to the embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a flowchart showing an operation example of the winding device according to the embodiment of the present invention.

  In step S <b> 1, the control unit 19 sets the rotation speed and torque of the motor 14 to initial values and starts the motor 14. In step S2, the winding unit 15 is driven by the motor 14 and rotates together with the flanges 16a and 16b. In step S3, the control unit 19 selects a detection signal output from the paper sensor 17a located on the innermost periphery.

  In step S4, the control unit 19 resets the count number n to zero. In step S <b> 5, the control unit 19 determines whether the winding of the label continuous body 1 has been completed based on the output signal of the roller position sensor 12 a that detects the position of the swing roller 12. If the winding of the label continuous body 1 has not been completed, the process proceeds to step S6. On the other hand, when the winding of the label continuous body 1 is completed, the process proceeds to step S11.

  If the control unit 19 determines in step S6 that the arm portion of the flange 16a has been detected based on the detection signal output from the selected paper sensor, the count number n is incremented (n = n + 1). In step S <b> 7, the control unit 19 determines whether or not the count number n has reached “3”. If the count number n is not “3”, the process returns to step S5. On the other hand, if the count number n is “3”, the process proceeds to step S8.

  In step S8, the control unit 19 determines whether or not the label continuum 1 is detected based on the detection signal output from the selected paper sensor. If the label continuum 1 is not detected, the process returns to step S4. On the other hand, when the label continuum 1 is detected, the process proceeds to step S9.

  In step S <b> 9, the control unit 19 sets the rotation speed of the motor 14 to be small or sets the torque of the motor 14 to be large in accordance with the winding radius of the label continuous body 1 corresponding to the selected paper sensor position.

  In step S10, the control unit 19 changes the selected paper sensor to one paper sensor on the outer peripheral side. That is, the control unit 19 changes the selected paper sensor from the paper sensor 17a to the paper sensor 17b when the paper sensor 17a is selected, and selects the selected paper when the paper sensor 17b is selected. The sensor is changed from the paper sensor 17b to the paper sensor 17c, and when the paper sensor 17c is selected, the selected paper sensor is changed from the paper sensor 17c to the paper sensor 17d. If the paper sensor 17d is selected, the selection of the paper sensor is terminated.

  Thereafter, the process returns to step S4. After such processing is repeated, if it is determined in step S5 that the winding of the label continuum 1 has been completed, the control unit 19 stops the motor 14 in step S11.

Next, an inspection apparatus according to an embodiment of the present invention will be described.
FIG. 7 is a front view showing an inspection apparatus according to an embodiment of the present invention, and FIG. 8 is a perspective view showing the inspection apparatus according to an embodiment of the present invention. This inspection apparatus incorporates a paper supply unit 30 and a verification unit 40 in a winding device according to an embodiment of the present invention. After inspecting print information printed on a print medium, the print medium is Wind up and roll into a roll.

  The paper supply unit 30 pulls out the print medium from the roll paper 4 around which the print medium printed by the printer is wound and supplies the print medium to the verification unit 40. The verification unit 40 optically reads print information such as barcodes and characters printed on the print medium and verifies the print information, thereby inspecting whether the print information is correctly printed on the paper. In the following, an example will be described in which a label temporarily attached to a mount is used as a print medium (paper) and a barcode printed on the label is verified.

  The paper supply unit 30 includes a paper supply shaft 31, an auxiliary roller 32, a grip roller control shaft 33, a grip roller 34, and a pressing roller 35. For example, a roll paper around which a continuous label having a length of 300 m is wound is set on the paper supply shaft 31. The auxiliary roller 32 guides the label continuous body drawn from the roll paper. The grip roller 34 disposed at a predetermined position by the grip roller control shaft 33 sandwiches the label continuum between the pressing roller 35 and rotates by a motor (not shown) to convey the label continuum.

  FIG. 9 is a cross-sectional view showing a detailed internal structure of the verification unit according to the embodiment of the present invention. The verification unit 40 reads the barcode printed on the label of the label continuum supplied from the paper supply unit 30 using a scanner, and verifies the barcode.

  The verification unit 40 includes a paper conveyance unit including an upstream conveyance unit 41, an intermediate conveyance unit 42, and a downstream conveyance unit 43 including a plurality of conveyance rollers, a scanner unit 44, a marking unit 45, and a verification unit 40. A control unit 46 that controls the operation of each unit, a display unit 47, an operation unit 48, a lower conveyance guide plate 51, an upper conveyance guide plate 52, an insertion sensor 53, an upstream movement detection unit 54, A downstream movement detection unit 55, a label position detection unit 56, a motor 57, an encoder 58, and a belt 59 are included.

  The label continuum supplied from the paper supply unit 30 (FIG. 7) passes between the paper insertion opening formed in the casing of the verification unit 40 and is interposed between the lower conveyance guide plate 51 and the upper conveyance guide plate 52. Inserted. The insertion sensor 53 is provided immediately on the downstream side (left side in the drawing) of the sheet insertion port in the transport direction, detects the label continuous body that is transported, and outputs a detection signal to the control unit 46. When receiving the detection signal from the insertion sensor 53, the control unit 46 controls the motor 57 that drives the upstream side conveyance unit 41 to the downstream side conveyance unit 43 so as to convey the label continuous body. As shown in FIG. 7, when the continuous label body is supplied from the paper supply unit 30 to the verification unit 40, the transport speed of the continuous label body in the verification unit 40 is set to the supply speed of the continuous label body by the paper supply unit 30. It is desirable to make it follow automatically.

  The lower conveyance guide plate 51 has a plurality of conveyance openings and a plurality of detection openings. The plurality of transport rollers 41a of the upstream transport unit 41, the plurality of transport rollers 42a of the intermediate transport unit 42, and the plurality of transport rollers 43a of the downstream transport unit 43 pass through the plurality of transport openings, and the lower transport guide plate 51 Projecting upward. The plurality of detection rollers 54a of the upstream side movement detection unit 54 and the plurality of detection rollers 55a of the downstream side movement detection unit 55 protrude above the lower conveyance guide plate 51 through a plurality of detection openings.

  The upper conveyance guide plate 52 is also formed with a plurality of conveyance openings and a plurality of detection openings. The plurality of transport rollers 41b of the upstream transport unit 41, the plurality of transport rollers 42b of the intermediate transport unit 42, and the plurality of transport rollers 43b of the downstream transport unit 43 are connected to the upper transport guide plate 52 through a plurality of transport openings. It protrudes downward. Further, the plurality of detection rollers 54b of the upstream side movement detection unit 54 and the plurality of detection rollers 55b of the downstream side movement detection unit 55 protrude below the upper conveyance guide plate 52 through a plurality of detection openings.

  The transport roller 41a and the transport roller 41b are disposed so as to face each other. Similarly, the transport roller 42a and the transport roller 42b are disposed so as to be in contact with each other, and the transport roller 43a and the transport roller 43b are disposed so as to be in contact with each other.

  The transport rollers 41a to 43a are driven by a motor 57 via a belt, a torque limiter, and an idle gear (not shown). When the label continuum is supplied from the paper supply unit 30 to the verification unit 40 as shown in FIG. 7, the torque limiter determines the conveyance speed of the label continuum in the verification unit 40 by the paper supply unit 30. In order to match the speed, the tension applied to the label continuum is limited.

  When transporting the label continuum supplied from the paper supply unit 30, first, in the upstream transport unit 41, the transport roller 41a contacts the label continuum from the lower side in the figure, and the transport roller 41b is in the upper side in the figure. The label continuum is brought into contact with the sheet, and the conveyance roller 41a rotates in response to the driving force of the motor 57, thereby conveying the label continuum in the downstream direction (left direction in the figure).

  The intermediate transport unit 42 is downstream of the upstream transport unit 41 in the transport direction, and is a position where the scanner unit 44 reads the print information printed on the label of the label continuum (position of arrow A in FIG. 9). Near the downstream side in the transport direction. In the intermediate transport section 42, the transport roller 42a contacts the label continuum from the lower side in the figure, the transport roller 42b contacts the label continuum from the upper side in the figure, and the transport roller 42a rotates by receiving the driving force of the motor 57. By doing so, the label continuous body is conveyed in the downstream direction. By providing the intermediate conveyance unit 42 at such a position, the flatness of the label continuum at the position of the arrow A can be improved, and the print information can be read with high accuracy by the scanner unit 44.

  The downstream transport unit 43 is provided on the downstream side in the transport direction with respect to the intermediate transport unit 42 and on the downstream side in the transport direction with respect to the marking unit 45. In the downstream side conveyance unit 43, the conveyance roller 43a contacts the label continuum from the lower side in the figure, the conveyance roller 43b contacts the label continuum from the upper side in the figure, receives the driving force of the motor 57, and the conveyance roller 43a By rotating, the label continuous body is conveyed in the downstream direction. By providing the downstream conveyance unit 43 at such a position, the flatness of the label continuous body at the marking position can be improved, and marking can be performed satisfactorily.

  The upstream side movement detection unit 54 is disposed in the immediate vicinity of the upstream side conveyance unit 41 on the downstream side in the conveyance direction, and includes detection rollers 54a and 54b and a pulley 54c. The downstream side movement detection unit 55 is disposed in the immediate vicinity of the intermediate conveyance unit 42 on the downstream side in the conveyance direction, and includes detection rollers 55a and 55b and a pulley 55c. The encoder 58 includes a pulley 58c.

  In the upstream side movement detection unit 54, the detection roller 54a comes into contact with the label continuous body from the lower side in the figure, and the detection roller 54b comes into contact with the label continuous body from the upper side in the figure to detect when the label continuous body is conveyed. Rollers 54a and 54b rotate. Similarly, in the downstream side movement detection unit 55, the detection roller 55a contacts the label continuum from the lower side in the figure, and the detection roller 55b contacts the label continuum from the upper side in the figure, whereby the label continuum is conveyed. Then, the detection rollers 55a and 55b rotate.

  A belt 59 is hung on the pulleys 54c, 55c, and 58c. Therefore, when at least one of the pulleys 54c and 55c rotates, the rotation propagates to the pulley 58c. The encoder 58 is a rotary encoder, and outputs a detection signal to the control unit 46 based on the rotation of the pulley 58c.

  The label position detection unit 56 preferably includes both a reflection type photosensor and a transmission type photosensor. The reflective optical sensor detects a position detection mark (eye mark) printed corresponding to the label position on at least one surface of the mount, and outputs a detection signal to the control unit 46. The transmissive optical sensor detects a difference in light transmittance between a region where the label is present and a region where the label is not present on the mount, and outputs a detection signal to the control unit 46.

  When the reflection type photosensor is used, the lower sensor 56a or the upper sensor 56b is configured by a reflection type photosensor. On the other hand, when a transmissive photosensor is used, the lower sensor 56a is configured by a light emitting unit or a light receiving unit of the transmissive photosensor, and the upper sensor 56b is configured by a light receiving unit or a light emitting unit of the transmissive photosensor. The

  The scanner unit 44 scans the label continuum conveyed by the sheet conveyance unit, thereby optically reading the barcode printed on the label and generating an output signal. For example, the scanner unit 44 includes an illumination unit and an optical sensor unit, and the optical sensor unit reads an barcode printed on a label illuminated by the illumination unit, and generates an output signal. An image sensor such as a one-dimensional or two-dimensional CCD (charge coupled device) image sensor can be used as the optical sensor unit. An output signal generated by the scanner unit 44 is output to the control unit 46.

  Under the control of the control unit 46, the marking unit 45 performs stamping on the label on which the barcode on which the verification error has occurred is printed. If the scanner unit 44 cannot read the barcode, or if the barcode read by the scanner unit 44 is different from the barcode to be printed, the barcode is printed. A label such as “impossible” or “NG” is applied to the label. In addition, the marking part 45 may perform marking using a laser or an inkjet, and may mark by notching a part of label or opening a hole.

  Referring to FIG. 7 again, the auxiliary roller 13 guides the label continuum discharged from the verification unit 40. The swing roller 12 abuts against the label continuum spanned between the verification unit 40 and the auxiliary roller 13 and absorbs the slack of the label continuum 2. The winding unit 15 is driven to rotate by the motor 14 and winds the label continuous body sent from the auxiliary roller 13. The plurality of paper sensors 17 a to 17 d detect the winding amount of the label continuum wound around the winding unit 15. The configuration and operation for winding the continuous label body are the same as the configuration and operation of the winding device described with reference to FIGS.

  DESCRIPTION OF SYMBOLS 1 ... Label continuous body, 2 ... Label, 3 ... Mount, 4 ... Roll paper, 10 ... Winding device, 10a ... Housing, 10b ... Bearing, 11 ... Guide roller, 12 ... Swing roller, 12a ... Roller position sensor, DESCRIPTION OF SYMBOLS 13 ... Auxiliary roller, 14 ... Motor, 14a ... Driving belt, 15 ... Winding part, 15a ... Winding shaft, 15b ... Winding paper tube adapter, 15c ... Driving pulley, 16, 16a, 16b ... Flange, 16c ... Flange Lock mechanism, 17a to 17d ... paper sensor, 18 ... operation part, 19 ... control part, 20 ... printer, 21 ... paper supply shaft, 22 ... stepping motor, 23 ... platen roller, 24 ... thermal head, 30 ... paper supply part 31 ... paper supply shaft, 32 ... auxiliary roller, 33 ... grip roller control shaft, 34 ... grip roller, 35 Pressing roller, 40 ... verification section, 41 ... upstream transport section, 41a, 41b ... transport roller, 42 ... intermediate transport section, 42a, 42b ... transport roller, 43 ... downstream transport section, 43a, 43b ... transport roller, 44 ... Scanner part, 45 ... Marking part, 46 ... Control part, 47 ... Display part, 48 ... Operation part, 51 ... Lower conveyance guide plate, 52 ... Upper conveyance guide plate, 53 ... Insertion sensor, 54 ... Upstream movement detection 54a, 54b ... detection roller, 54c ... pulley, 55 ... downstream side movement detection unit, 55a, 55b ... detection roller, 55c ... pulley, 56 ... label position detection unit, 56a ... lower sensor, 56b ... upper sensor, 57 ... motor, 58 ... encoder, 58c ... pulley, 59 ... belt

Claims (4)

A winding device for winding a print medium and winding it into a roll,
A winding unit that includes a winding shaft that rotates by being driven by a motor;
A first flange fixed to the winding shaft;
A second flange detachably attached to the take-up shaft, which guides a print medium taken up by the take-up portion to the first flange when attached to the take-up shaft. A second flange;
A winding amount detection unit for detecting a winding amount of the print medium wound on the winding unit;
A control unit for controlling the rotational speed or torque of the motor based on the detection result of the winding amount detection unit;
A winding device comprising: Each of the first and second flanges has at least one arm portion extending radially to guide a print medium wound on the winding portion;
The winding amount detection unit includes a plurality of optical sensors arranged at different positions from the winding unit in order to detect the winding amount of the print medium wound around the winding unit in stages.
The winding unit based on a plurality of detection signals respectively output from the plurality of photosensors when the control unit has no arm portion of the first flange in front of the plurality of photosensors. The winding device according to claim 1, wherein the winding amount of the print medium wound up by the roller is determined.   The control unit sets the rotation speed of the motor to be smaller or sets the torque of the motor to be larger as the winding amount of the print medium wound up by the winding unit is increased. 2. The winding device according to 2. The winding device according to any one of claims 1 to 3,
A verification unit that is incorporated in the winding device and optically reads print information printed on a print medium to verify the print information;
And an inspection apparatus that winds the print medium and winds it into a roll after inspecting print information printed on the print medium.

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