Labeling Device

Abstract

To provide a label sticking device that allows easy setting of label paper. [Solution] The label application device 1 has a housing 2 equipped with a label application mechanism 10 that picks up labels 120 one by one from a label paper 121 and applies it to the topmost sheet of a stack of sheets, a pair of rollers that clamp and transport the liner from which the label has been removed by the label application mechanism 10, and a take-up roller 61 that is installed downstream of the pair of rollers and winds up the discharged liner. The housing 2 has control means that controls the drive of the pair of rollers and the wind-up roller 61, and when setting the label paper, the control means rotates the pair of rollers, and when the liner is transported to a position where it can be wound by the wind-up roller 61, rotates the wind-up roller 61 to wind up the liner.

Description

[Technical Field]

[0001] The present invention relates to a labeling device that sequentially applies labels to stacked sheets. [Background technology]

[0002] Conventionally, there has been known a label application device that peels off labels and applies the peeled labels to a conveyed sheet (including a bag-shaped sheet), as disclosed in Patent Document 1, for example. The labels are continuously attached to a strip-shaped backing sheet along the longitudinal direction (label paper is a strip-shaped backing sheet with labels continuously attached thereto), and the device is configured to peel off only the labels from the backing sheet and apply them sequentially to the surface of the sheet in synchronization with the conveyed sheet.

[0003] After the label is applied, the backing sheet is transported downstream of the label application area and taken up by a take-up roller. As more backing sheet is wound around the take-up roller, the diameter of the backing sheet gradually increases, and once a certain amount has been wound, the rolled backing sheet is removed from the take-up roller. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2011-93616 Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, after labels are applied to the backing paper, it is wound around the take-up roller. When the amount of paper wound up becomes too large, the take-up roller must be disassembled and removed using tools or other tools. This process of removing the backing paper is tedious, time-consuming, and poses the risk of damaging equipment. Furthermore, when loading label paper into a labeling device before labels are applied, the label paper must be pulled out from the label roller and its leading edge wound around the take-up roller. This loading process is also tedious and time-consuming.

[0006] The present invention has been made in response to the above-mentioned problems, and has as its object to provide a label application device that allows easy setting of label paper and easy winding and removal of the backing paper after the label has been applied. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the label application device of the present invention has a housing equipped with: a label application mechanism that pulls out, from a label roller, label paper on which labels are continuously attached longitudinally to a strip-shaped backing paper, and sucks up labels one by one from the label paper and applies them to the uppermost sheet of a stack of sheets; a pair of rollers that clamp and transport the backing paper from which the labels have been removed by the label application mechanism; and a take-up roller that is located downstream of the pair of rollers and takes up the discharged backing paper; and the housing also has a control unit that controls the drive of the pair of rollers and the take-up roller, and when setting the label paper, the control unit rotates the pair of rollers, and when the backing paper is transported to a position where it can be taken up by the take-up roller, rotates the take-up roller to take up the backing paper.

[0008] In the label application device described above, when setting label paper, the label paper is inserted into a pair of rollers installed inside the housing and the rollers are driven. At this time, when the leading edge of the label paper (backing paper) is transported to a position where it can be wound by the winding roller, the winding roller is rotated and driven to wind up the backing paper, so the label paper can be set easily without having to wind the leading edge of the label paper (backing paper) around the winding roller. [Effects of the Invention]

[0009] According to the present invention, a label application device that allows easy setting of label paper can be obtained. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an example of a labeling device as seen from the labeling side. [Figure 2] 2 is a perspective view of the label application device shown in FIG. 1 as seen from the mount paper winding device side. FIG. [Figure 3] FIG. 2 is a side view of the labeling device shown in FIG. [Figure 4] 2 is a diagram showing the label application device and sheet moving mechanism shown in FIG. 1; FIG. [Figure 5] FIG. 2 is a rear view of the label application device shown in FIG. 1. [Figure 6] 10 is a perspective view showing the discharge of the backing paper from the backing paper winding device and the guiding of the backing paper to the winding roller. FIG. [Figure 7] FIG. 4 is a perspective view showing a take-up roller of the backing paper take-up device. [Figure 8] FIG. [Figure 9] FIG. 10 is a diagram showing a state in which the backing paper is wound around the winding roller. [Figure 10] 10A and 10B are diagrams illustrating a method for reducing the diameter of the winding roller. [Figure 11] FIG. 4 is a control block diagram for controlling the driving of the roller pair and the winding roller. [Figure 12] FIG. 4 is a diagram illustrating the origin position of the take-up roller. [Figure 13]4(a) to 4(d) are diagrams sequentially showing the driving modes of the roller pair and the winding roller. DETAILED DESCRIPTION OF THE INVENTION

[0011] An embodiment of a label application device will now be described with reference to FIGS.

[0012] FIG. 1 is a perspective view of the labeling device of this embodiment as seen from the labeling side, FIG. 2 is a perspective view of the labeling device shown in FIG. 1 as seen from the backing paper winding device side, FIG. 3 is a side view of the labeling device shown in FIG. 1, FIG. 4 is a diagram showing the labeling device and sheet moving mechanism shown in FIG. 1, and FIG. 5 is a diagram of the labeling device shown in FIG. 1 as seen from the rear. In these figures, the movement direction (front-back direction) of the stacked sheets is indicated by X, the direction perpendicular to the sheet movement direction (width direction) is indicated by Y, and the direction perpendicular to the XY plane (up-down direction) is indicated by Z.

[0013] The labeling device 1 according to this embodiment includes a mounting table 3 on which a large number of storage bags (also referred to as sheets) 100 for storing food products such as vegetables are stacked, and a housing 2 provided with a label roller 5 around which a strip of label paper 121 is wound. The label paper 121 has labels 120, each of which has a product name or other pre-printed label printed thereon, adhered continuously in the longitudinal direction to a strip of backing paper 122. The mounting table 3 is located on the lower side of the housing 2, and the label roller 5 is located on the upper side of the housing 2. The label paper 121 drawn from the label roller 5 is fed forward and then deflected downward, and the labels 120 are successively sucked (peeled) at the front of the housing and adhered to the topmost storage bag of the storage bags 100 on the mounting table 3. The backing paper 122 from which the label 120 has been peeled is then transported into the housing through a backing paper insertion port (described later) and taken up by a take-up roller 61 of a backing paper take-up device 60.

[0014] In the above-described configuration, the strip-shaped label paper 121 (backing paper 122) is transported by the drive of a pair of rollers (roller pair) described below that are arranged inside the housing. That is, the label paper 121 with the labels 120 continuously attached thereto is held between the contacting parts of the roller pair, and is pulled out from the label roller 5 by the drive of one of the drive rollers. The labels 120 are then peeled off from the pulled-out label paper along the way, and the backing paper 122 is transported to the rear side of the housing 2 by the drive of the roller pair and taken up by the rotating take-up roller 61.

[0015] The label paper 121 pulled out from the label roller 5 is sucked up one by one by a suction device 11 (label suction section 11A) installed on the front side of the housing 2, and the labels 120 are attached to the top sheet 100a of the stacked sheets 100.

[0016] The sheet 100 stacked on the table 3 is a so-called three-sided body made by stacking rectangular plastic film sheets (nylon storage bags) and welding the outer edges, and contains vegetables, fruits, etc. The attached label 120 has product name, price, barcode, etc. printed on it in advance.

[0017] The operation of setting the label paper 121 and attaching the label will be described below. A guide roller 8 is installed in the housing 2 downstream of the label roller 5, and deflects and guides the pulled-out label paper 121 toward the downstream side of the front surface of the housing 2. A label application mechanism 10 is also installed in the housing 2 downstream of the guide roller 8, and this label application mechanism 10 applies one label to the uppermost sheet 100a of the stacked sheets 100 on the mounting table 3. Then, the front portion of the uppermost sheet 100a with the label attached thereto is turned up by a sheet moving mechanism 20 provided in the housing 2 and moved to the rear side of the stacked sheets 100.

[0018] The label application mechanism 10 includes a suction device 11 aligned with the widthwise center of the label paper 121 being conveyed, and a label suction section 11A at the leading end of the suction device 11 sucks a label 120 from the label paper 121 and affixes it to the top sheet 100a of the laminated sheet 100. An adhesive is applied to the backside of the label 120, and the suction device 11 is driven rearward (toward the housing) in synchronization with the conveyed label paper 121, and the label suction section 11A sucks the label 120 peeled off from the label paper 121 being bent and conveyed into the housing. The suction device 11 is then driven to rotate approximately 90°, and presses the sucked label against the top sheet 100a, adhering it.

[0019] The suction device 11 is configured as a cylinder that sucks air, and when air is sucked by the label suction part 11A at the tip, the label 120 is sucked from the label paper 121. The suction device 11 is supported by a cylinder rotation arm 13 provided on the housing 2. By controlling the rotation drive of the cylinder rotation arm 13 and the air suction operation of the suction device 11, labels 120 are continuously affixed to the uppermost sheet 100a while the device is operating.

[0020] The housing 2 is provided with a backing paper insertion opening 15 for inserting into the housing a backing paper 122 (a backing paper to which a label 120 has been sucked by the label suction section 11A of the label application mechanism 10) pulled out from the label roller 5. The downstream side of this backing paper insertion opening 15 is bent so that the label can be peeled off, and after the label is peeled off, the backing paper 122 to which the label has been sucked by a suction device is guided to a pair of rollers inside the housing 2.

[0021] The housing 2 of this embodiment is also provided with a guide mechanism 30 that guides the label paper 121 (backing paper 122) pulled out from the label roller 5 from the label suction section 11A through the backing paper insertion opening 15 to a pair of rollers installed inside the housing 2. This guide mechanism 30 has a function that allows the label paper 121 pulled out from the label roller 5 to be easily set, thereby enabling the label paper to be transported in a stable state.

[0022] The guide mechanism 30 is provided with a pressure guide 31 that extends widthwise so as to press the label paper 121 pulled out from the label roller 5 against the front surface of the housing 2. This pressure guide 31 has the function of pressing the label paper 121 deflected by the guide roller 8 against the housing side to prevent it from bulging. In addition, downstream of the pressure guide 31, a pressure guide 33 with a similar function is provided as a guide mechanism.

[0023] The pressure guide 33 is biased toward the housing 2 by a biasing spring (not shown), and by pulling the pulling operation part 33a forward against the biasing force, a gap is formed between the pressure guide 33 and the housing 2. The label paper is inserted into this gap and the pulling operation part 33a is returned to its original position, thereby performing initial setting. At this time, the label paper is prevented from bulging.

[0024] A label take-out section 37 is disposed downstream of the pressure guide 33, against which the label suction section 11A is pressed when sucking the label 120. The label take-out section 37 is formed in a plate shape, and the backing paper 122 enters the gap between the upper edge of the front surface of the label take-out section 37 and the housing 2, guiding the backing paper 122 into the housing (the gap forms the backing paper insertion port 15).

[0025] In this case, the backing paper conveying path from the backing paper insertion port 15 to the roller pair is bent significantly upward from the backing paper insertion port 15 (bent diagonally upward), so when the label paper 121 enters the housing from the backing paper insertion port 15, the label paper 121 is bent, causing the label 120 to peel off (become easier to peel off) from the backing paper.

[0026] That is, when the label paper 121 is transported downward from the pressure guide 33 and the backing paper 122 is transported into the housing through the gap at the upper end of the label removal section 37 (backing paper insertion port 15), the label 120 moves downward while being subjected to a peeling action against the label paper 121 and is adsorbed by the label adsorption section 11A.

[0027] A pair of rollers 40 is disposed in the housing 2 near the backing paper insertion opening 15 to hold and transport the backing paper 122 inserted through the backing paper insertion opening 15. One of the pair of rollers 40 is configured as a drive roller 41 and the other as a driven roller 42, and in this embodiment, the lower roller is the drive roller 41 and the upper roller is the driven roller 42. The pair of rollers 40 can be switched between a contact state and a separation state by an operating member 45.

[0028] In this embodiment, the operation member 45 is configured to be switchable by a simple operation (one-touch operation). Specifically, the operation member 45 includes a pair of rotating parts 46a, 46b rotatably supported on the housing 2 at both ends of the support shaft of the driven roller 42, and an operation part 46c bridged at the tips of the pair of rotating parts 46a, 46b. The pair of rotating parts 46a, 46b are biased downward (toward the abutment of the roller pair) by a biasing means (not shown). As a result, by lifting the operation part 46c against the biasing force, the roller pair 40 is separated, and by pressing down the operation part 46c in accordance with the biasing force, the roller pair 40 is brought into contact.

[0029] In this embodiment, the label paper (backing paper) 121 drawn from the label roller 5 is transported between the pair of rotating parts 46a, 46b, facilitating the contact / separation operation of the roller pair 40. Also, as described above, the label paper drawn from the label roller 5 is guided from the label adsorption part 11A to the roller pair 40 via the guide mechanism 30 provided in the housing 2.

[0030] A liner winding device 60 is provided downstream of the roller pair 40, which winds up the liner 122 transported by the drive of the roller pair 40. The liner winding device 60 includes a winding roller 61, and winds up the liner transported by the drive of the roller pair 40. In this case, the rotation of the winding roller 61 is controlled together with the rotational drive of the roller pair 40, and the discharged liner 122 is wound up around the winding roller 61 without slack.

[0031] The uppermost sheet 100a on the mounting table 3, to which the label 120 has been attached by the label attachment mechanism 10, is then moved to the rear side of the stack of sheets 100 by a sheet moving mechanism 20 provided in the housing 2. The sheet moving mechanism 20 includes a suction device 21 that sucks the uppermost sheet, and a sheet separating mechanism that prevents multiple sheets from being lifted (by scraping them off so that they become one sheet) when the suction device 21 lifts the sheet.

[0032] A plurality of suction devices 21 (five in this embodiment) are disposed at positions symmetrical with respect to the width direction of the sheet so as to evenly suck the uppermost sheet 100a to which the label 120 is affixed. The suction devices 21 can be changed as appropriate depending on the size of the sheets to be separated, and can be modified as appropriate, for example, by disposing one on each side (total of two).

[0033] The sheet separation mechanism is disposed, for example, on the edge (front edge) side of the stacked sheets 100 stacked on the table 3, and is equipped with a flange that presses the top sheet of the stacked sheets 100 in a biased state within a certain range from the edge. When the suction device 21 sucks and lifts the top sheet, this flange bends the sheet and releases it from the flange, thereby preventing the second and subsequent sheets from rising together (the function of scraping off the second and subsequent sheets). It should be noted that the configuration of such a sheet separating mechanism 22 can be modified as appropriate as long as it can separate the second and subsequent sheets when the top sheet is sucked and moved in the direction of being lifted.

[0034] The suction device 21 of the sheet moving mechanism 20 is supported by the housing 2 so as to be driven back and forth along the stacked sheets 100, and the top sheet 100a to which the label 120 is affixed is turned up by the suction of the suction device 21 and moved backward, and the suction is released on the sheet next to the top sheet so that the top sheet is folded over on top of the next sheet.

[0035] Therefore, at the rear side of the stacked sheets, the sheets to which labels are affixed and turned up are successively folded over, so the stacked state of the labeled sheets does not become long in the front-to-rear direction, and the entire device can be made compact.

[0036] Next, the configuration of the backing paper winding device 60 will be described with reference to FIGS. The backing paper winding device 60 includes a winding roller 61 rotatably supported on the housing 2 (roller mounting stay 2A), and the backing paper discharged from a backing paper discharge section 65 provided in the housing 2 is wound onto the winding roller 61, which is driven to rotate in the direction of the arrow in Fig. 8 by the roller pair 40. In this case, the winding roller 61 can be driven to rotate by the same drive source (drive motor) as the drive source of the roller pair 40, and is connected to the drive source by a gear train, drive belt, etc.

[0037] It is preferable to provide a liner passage between the take-up roller 61 and the liner discharge section 65 to guide the liner discharged from the liner discharge section 65 toward the take-up roller. Such a liner passage can be formed, for example, by a pair of flaps 66a, 66b as shown below. That is, the pair of flaps 66a, 66b that swing up and down are formed into plates of approximately the same shape, and the gap formed between them can form a liner passage 66c. The liner 122 discharged from the liner discharge section 65 enters the liner passage 66c, and the guided liner 122 is transported directly toward the take-up roller 61.

[0038] 7, a flat portion 61a is formed on a part of the outer peripheral surface of the winding roller 61, and a hollow portion (notch) 61b extending radially is formed in the center of the flat portion 61a. This hollow portion 61b extends in the axial direction (width direction), and the winding roller 61 is supported so that a semi-cylindrical portion 61c having a substantially semicircular cross section and a semi-cylindrical portion 61d having substantially the same shape are opposed at a fixed distance with the hollow portion interposed therebetween.

[0039] Furthermore, a structure is provided between semi-cylindrical portions 61c and 61d for radially deforming and reducing the diameter of take-up roller 61. This diameter-reducing structure is configured, for example, by supporting spring 62 in the gap between semi-cylindrical portions 61c and 61d on the end sides thereof, so that when semi-cylindrical portions 61c and 61d are pinched and compressed radially, the diameter of take-up roller 61 is reduced. Therefore, when removing backing paper 122 wound around take-up roller 61, pinching semi-cylindrical portions 61c and 61d reduces the diameter, making it possible to easily remove backing paper 122 in a wound state.

[0040] That is, as shown in Fig. 9, when the amount of backing paper wound becomes large and backing paper 122 needs to be removed from take-up roller 61, by pinching semi-cylindrical portions 61c and 61d and reducing the diameter in the radial direction as shown by the arrows in Fig. 10, the wound backing paper can be easily removed by moving it axially (towards the user), eliminating the need for disassembly using tools, etc. Specifically, compared to conventional take-up rollers that require disassembly, the work time was reduced from about 2 minutes to about 10 seconds, and maintenance costs were also reduced by about 60%.

[0041] Furthermore, the pair of flaps 66a, 66b can swing upward as the amount of winding of the backing paper 122 increases, and the backing paper passage 66c moves along the outer surface of the backing paper 122, which gradually becomes larger in diameter as it is wound (the backing paper 122 is smoothly guided).

[0042] Furthermore, the positional relationship between the pair of flaps 66a, 66b and the winding roller 61 is controlled by the control means 70 described below so that, at the time of initial setting, the hollow portion 61b of the winding roller 61 is positioned on the extension of the backing paper path 66c of the pair of flaps 66a, 66b.

[0043] Here, the operation of discharging the backing sheet 122 and the operation of the winding roller 61 will be described with reference to FIGS.

[0044] 11 is a control block diagram of the control means 70 that controls the driving of the roller pair 40 and the winding roller 61. As described above, the label paper (backing paper) is transported by the driving of the roller pair 40 (drive roller 41), and the backing paper 122 is wound by the driving of the winding roller 61. The driving roller 41 and winding roller 61 are controlled by the driving of a drive motor 72.

[0045] A control board that constitutes control means 70 is installed within the housing 2, and a control unit (CPU) 75 of this control board controls the driving of drive motor 72. The driving of each drive roller 41 and take-up roller 61 is controlled by a drive signal from the control unit 75. The control unit 75 also receives a detection signal from sensor 67c that constitutes sensor unit 67 that detects the origin position of take-up roller 61, and is connected to an input unit (such as a numeric keypad) 71 that inputs information such as the size of the label paper (label) to be used.

[0046] The sensor unit 67 described above may be any unit that performs positioning control (detects the origin position) so that the hollow portion 61b of the take-up roller 61 is positioned on the extension of the backing path 66c of the pair of flaps 66a, 66b during initial setting. For example, as shown in Fig. 12, the sensor unit 67 may be configured with an origin position slit disk 67a attached to the roller mounting stay 2A that rotates integrally with the take-up roller, and a sensor (e.g., a photosensor) 67c that can detect an origin position slit 67b formed in the slit disk.

[0047] Next, the driving manner of the drive roller 41 and the winding roller 61 will be described with reference to FIGS. 13(a) to 13(d).

[0048] First, as shown in Figure 1, when label paper 121 is set in the device, the origin position of take-up roller 61 is detected and the hollow portion 61b of take-up roller 61 is positioned on the extension of liner path 66c of a pair of flaps 66a, 66b (Figure 13(a)). In the example shown, when two labels are attached, the label paper (liner) advances by the distance of two labels, and at the stage when two labels have been attached, the leading edge of the liner 122 being transported is positioned in the middle of liner path 66c (Figure 13(b)). At this time, take-up roller 61 is not driven.

[0049] When two more labels are attached (four labels in total), the backing paper 122 advances by two more labels, and the leading edge of the backing paper 122 enters the hollow portion 61b of the take-up roller 61 on the extension of the backing paper path 66c (FIG. 13(c)).

[0050] Then, when, for example, 10 labels are affixed and the leading edge of the backing paper protrudes from the take-up roller 61 by more than 1.5 times the circumference of the take-up roller 61, the take-up roller 61 is driven to rotate and wind up the backing paper (FIG. 13(c)). Note that, depending on the length of the labels, the number of labels that must be produced before the take-up roller 61 is driven to rotate is input in advance via the input unit 71. Furthermore, as described above, the specific position at which the take-up roller 61 is driven to rotate after the backing paper has been transported to the windable position can be modified as appropriate.

[0051] Thereafter, the take-up roller 61 is rotated together with the drive roller 41 (FIG. 13(d)), but the drive may be synchronized with the drive of the drive roller 41 or may not be synchronized. The amount of drive and the timing of stopping the drive may also be controlled by the detection of the sensor 67c.

[0052] As described above, when the roller pair 40 is driven and the liner 122 is discharged, the liner 122 enters the notch 61b of the winding roller 61, which is in a stopped state. Then, with the liner 122 in the state (with the leading edge transported to the winding position), the winding roller 61 is driven to rotate, and the discharged liner 122 is automatically wound up. In this way, when the label paper 121 is set on the label roller 5, pulled out as is, and clamped at the position of the roller pair 40, the winding roller 61 starts to rotate with a delay from the rotation of the roller pair 40. This means that there is no need to pinch the discharged liner 122 and wind it up around the winding roller 61, making it easy to set the label paper.

[0053] Moreover, the overall size of the device can be reduced because the winding roller 61 can be disposed close to the backing paper discharge section 65. Furthermore, when the amount of backing paper 122 wound up increases, the flaps 66a and 66b also swing upward.

[0054] To use the label application device 1 configured as described above, the label paper 121 is loaded onto the label roller 5, and the leading edge of the label 120 is peeled off from the edge of the backing paper (approximately 80 mm in this embodiment). Next, the operating portion 46c of the operating member 45 is lifted to separate the roller pair 40. In this state, the label paper 121 is passed through the pressure guide 31 of the guide mechanism 30, and the pulling portion 33a of the pressure guide 33 below it is pulled forward against the biasing force, inserting the label paper 121 into the gap between the pressure guide 33 and the housing 2. Next, the backing paper 122 from which the leading edge label 120 has been peeled is inserted approximately 80 mm into the backing paper insertion opening 15, and the operating portion 46c of the operating member 45 is pressed down to abut the roller pair 40. In this case, if the backing paper 122 becomes loose around the backing paper insertion opening 15, the label roller 5 is rotated slightly in reverse by hand to remove the slack.

[0055] With the above-described configuration, when the label paper 121 is pulled from the label roller 5 and set, the guide mechanism 30 allows the label paper 121 to be set stably. The roller pair 40 can be separated with a single touch of the operating member 45, and the label paper is then inserted into the space between the roller pair 40, thereby improving operability. Furthermore, there is no longer a need to ensure a large excess length of the label paper backing (as was conventionally the case, 550 mm or more). Specifically, with the configuration of this embodiment, automatic loading can be achieved even with an excess length of 80 mm, making it possible to reduce the excess length of the backing paper during setting by approximately 80% compared to conventional methods (reducing material waste).

[0056] Furthermore, the top sheet 100a, to which the label 120 has been affixed by the label affixing mechanism 10, is moved from the stack of sheets by the sheet moving mechanism 20, and the front half is folded over the next sheet, so that the entire device for producing labeled sheets can be made compact, and the label affixing process can be carried out efficiently.

[0057] Although the label application device according to the present invention has been described above as an embodiment, the present invention is not limited to the above embodiment and can be modified in various ways. For example, it is possible to appropriately modify the diameter reduction structure, constituent materials, etc. of the winding roller 61. It is also possible to appropriately modify the timing of driving the winding roller 61, the amount of driving, and the configuration of the sensor. [Explanation of symbols]

[0058] 1 Labeling device 2. Case 3. Mounting table 5 Label roller 10 Label application mechanism 11 Suction machine 11A Label removal section 15 Mounting card insertion slot 20 Seat movement mechanism 30 Guide mechanism 40 Laura Vs. 45 Operating member 60 Mounting paper winding device 61 Winding roller 66a,66b Flap 67 Sensor section 67c sensor 70 Control Means 100 laminated sheets 100a top sheet 120 labels 121 Label paper 122 Mount

Claims

1. A label application device having a housing including a label application mechanism that pulls out a label sheet, on which labels are continuously attached in the longitudinal direction of a strip-shaped backing sheet, from a label roller, and sucks and adheres labels one by one from the label sheet to the topmost sheet of a stack of sheets; a pair of rollers that clamp and transport the backing sheet from which the labels have been removed by the label application mechanism; and a take-up roller that is located downstream of the pair of rollers and takes up the discharged backing sheet, the housing includes a control unit that controls the driving of the roller pair and the take-up roller; When setting the label paper, the control unit rotates the roller pair to rotate the take-up roller to wind up the backing paper when the backing paper is transported to a position where the take-up roller can take up the backing paper, the take-up roller has a hollow portion extending radially so that the discharged backing sheet can be inserted therein; the control unit controls rotation so that the position of the hollow portion becomes a position for inserting the backing paper when setting the label paper, The winding roller has two semi-cylindrical portions, each having a substantially semi-circular cross section, opposed to each other at a distance by the hollow portion, Between the opposing semi-cylindrical portions, a structure is provided for deforming the take-up roller in a radial direction to reduce its diameter, The structure for deforming the take-up roller in the radial direction to reduce its diameter is configured by supporting a spring in the gap between the opposing semi-cylindrical portions, and when the semi-cylindrical portions are pinched together and compressed in the radial direction, the diameter of the take-up roller is reduced. A label application device characterized by:

2. The label application device described in Claim 1, characterized in that the control unit drives the winding roller to rotate after the backing paper is transported and inserted into the hollow portion of the winding roller.

3. A label application device as described in Claim 1, characterized in that a backing paper passage is provided between the part from which the backing paper is discharged and the winding roller, for guiding the discharged backing paper toward the winding roller.

4. The backing paper passage is provided on a swingable flap that is installed on the same plane from the portion where the backing paper is discharged to the hollow portion of the winding roller, 4. The label application device according to claim 3, wherein the flap is capable of swinging in contact with the backing paper as the amount of the backing paper taken up increases.

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