JP2013075714A - Labeler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably hold a label by a label holding part without leaving a mark of a label suction hole.SOLUTION: A plurality of label holding parts 12 having a front projecting part 12a for holding a front end portion of a label and a rear projecting part 12b for holding a rear end portion, are provided on an outer circumferential surface of a transfer drum 10 rotated by a rotating means. Paste is applied on the label to be held by the holding part and rotatably transferred, from a paste coating means 14, and the label is pasted on a container 18. The front projecting part 12b is formed of an elastic body having the adhesiveness such as silicon, and no suction port is formed for sucking and holding the label in an area where the label is applied with paste. The label is held by adhesion of the adhesive elastic body. A sweeping roller 13 which sweeps the label in a contact manner, and brings the label into close contact with the rear projecting part 12b is arranged on the upstream side of the paste coating means 14 so that the label is brought into close contact with the rear projecting part 12b and reliably held.

Description

  The present invention relates to a labeler that attaches a label to a container, and more particularly to a labeler that applies a paste to the back surface of a label and winds the object around a container or a mandrel.

  Conventionally, a technique for cutting a strip-shaped film wound into a roll to form individual film labels, applying glue to the front and rear ends of the film label, and winding and adhering around the container is known. (For example, refer to Patent Document 1). When the thickness of the film label is thin, it is preferable to apply the glue as thinly as possible on the film label because the marks of the glue are conspicuous when shrinking.

  The labeler according to the invention described in Patent Document 2 uses a contact-type hot melt gun (referred to as a hot melt coating head in this invention) in order to apply an appropriate amount of glue to a film label. In the invention of the cited document 2, a label holding portion that sucks and holds the label by vacuum is formed on the outer periphery of the transfer drum, and the label holding portion sucks and holds the leading end side and the trailing end side of the label to rotate and convey the transfer drum. A label is brought into contact with a hot melt coating head installed on the outer peripheral side of the drum, and paste is applied thereto.

  In the configuration in which the label rotating by the transfer drum is brought into contact with the hot melt coating head and the paste (hot melt) is applied, the label may be deformed by heat when the hot melt is applied. there were. One of the factors is that the label that is held when the label held on the transfer drum comes into contact with the hot melt coating head causes the label to be turned up from the holding part of the transfer drum or lifted from the holding part. It is thought that the label is deformed because it receives the heat of.

  In order to avoid such a problem, it is conceivable to increase the number of vacuum suction holes provided in the label holding part of the transfer drum so that the label is securely sucked and held. Since the wire is pulled and recessed, there is a problem that a mark remains when shrinking without applying glue.

  In order not to be affected by the heat caused by hot melt, there has already been proposed a structure for securely holding the label on the holding portion of the transfer drum and preventing it from turning up or floating (Patent Document 3 and Patent Document 4). reference). In the invention described in Patent Document 3, an electrode is placed in front of the position where the label is delivered, and the outer peripheral surface of the mounting drum is charged by discharging from this electrode to the outer peripheral surface of the mounting drum, whereby the label is generated by static electricity. Is attached to the outer peripheral surface of the mounting drum. Moreover, in the invention described in Patent Document 4, the outer peripheral surface of the label holding drum is provided with a suction hole for sucking and holding the label by a vacuum suction action, and the peripheral surface is an elastic body having appropriate elasticity. A configuration in which the silicon rubber is mounted is described.

JP-A-3-240633 JP 2009-202897 A Japanese Patent No. 4511651 Japanese Patent No. 4004077

  The configuration described in Patent Document 3 requires charging means and charge eliminating means, has a complicated structure, and is expensive. Further, in the configuration described in Patent Document 4, it is not possible to obtain a sufficient holding force simply by transferring the label to the silicon rubber, and it is necessary to provide a suction hole for performing a vacuum suction action. Sometimes the problem is that traces of suction holes remain. The present invention has been made in order to solve the above-described problems, and exhibits the properties of a material having adhesive properties such as silicon without leaving a trace of the suction hole of the label at the time of shrinking. It is possible to hold the label securely.

  The present invention comprises a transfer drum having a suction port formed on the surface for sucking and holding a label, a rotating means for rotating the transfer drum, and a glue applying means for applying glue to the label held on the transfer drum. A labeler for applying a paste to a predetermined position of the label and winding the label around an outer periphery of an object to be mounted such as a container or a mandrel while the transfer drum receives and rotates and transfers the label, on the surface of the transfer drum, A label holding portion for holding the rear end portion of the label is formed so as to protrude to the outer periphery, and at least the holding region of the label holding portion facing the region where the paste is applied to the label is made of an adhesive material and the holding The suction port is not formed in the region.

  Further, the second invention is the labeler according to claim 1, wherein the label is brought into contact with the label held by the holding unit on the path where the transfer drum receives the label and transfers it to the glue applying means. The attaching means is arranged with a scissors that are scissors attached to the holding portion.

In the labeler according to the present invention, at least the holding area of the label holding part facing the area where glue is applied to the label is made of an adhesive material, and a suction port for sucking and holding the label is not formed in this holding area. As a configuration, since the label is held in close contact with the label holding portion, there is an advantage that the label can be held without suction by vacuum or the like, and the finish is improved without leaving traces of the suction holes at the time of shrinking.
In addition, by sticking the label held in the label holding part with a scissoring roller and sticking it to the label holding part, the adhesion between the label and the label holding part can be improved, and the label can be turned up and lifted. There is an advantage that it is possible to prevent the heat of the glue (hot melt) from acting locally.

FIG. 1 is a plan view showing the overall structure of the labeler in a simplified manner. Example 1 FIG. 2 is a longitudinal sectional view of a transfer drum and glue applying means provided on the labeler. FIG. 3 is an enlarged plan view showing a main part of the transfer drum and a scissor roller. FIG. 4 is an enlarged plan view showing the main parts of the transfer drum and the glue applying means. FIG. 5 is a perspective view of the hot melt coating head. FIG. 6 is a plan view schematically showing the entire structure of the labeler. (Example 2) FIG. 7 is a longitudinal sectional view of the container transport device.

  Label holding portions are provided on the outer peripheral surface of the transfer drum at equal intervals in the circumferential direction, and the labels cut one by one are transferred to each label holding portion, and the labels are rotated and transferred by the transfer drum rotated by the rotating means. The The transfer drum is formed with a suction port for sucking and holding the label on the surface, and a label holding portion for holding the rear end portion of the label is formed on the surface of the transfer drum so as to protrude to the outer periphery. Further, at least the holding area of the label holding portion facing the area where the glue is applied to the label is made of an adhesive material, and the suction port is not formed in this holding area. Between the label delivery position A where the label holding part receives the label and the label attaching position B where the label is attached to the container, paste is applied to the front end and the rear end of the back side of the label in the transport direction. A glue applying means is disposed between the label delivery position A and the glue applying means. Between receiving the label and applying the glue by the glue applying means, the label is turned by sticking the label with a scissors roller and sticking the entire part of the label to which the glue is applied to the label holding part. The objective of preventing the heat | fever at the time of apply | coating glue from acting locally is prevented.

  First, the overall structure of the labeler will be briefly described with reference to FIG. A strip-shaped label 2 having a predetermined width is wound in a roll shape and supported by a roll stand (not shown). The strip-shaped label 2 is pulled out from the roll stand, and a pair of rotating bodies 6A through a plurality of rollers 4, 6B is sent to the cutter 6 and cut. The label 2A (see FIGS. 3 and 4) cut to a predetermined length by the cutter 6 is delivered to the label transfer drum 10 via the delivery drum 8. The transfer drum 10 is provided with a plurality (four locations in this embodiment) of label holding portions 12 on the outer peripheral surface at equal intervals in the circumferential direction, and each label holding portion 12 holds a label 2A one by one. And rotate and transport. A roller 13 (hereinafter referred to as a scissoring roller) serving as a label scissor and a glue applicator 14 on the outside of the label transport path on the downstream side of the label delivery position A from the transport drum 8 of the transfer drum 10. , 15 are installed. The scoring roller 13 contacts the label 2A held by the label holding unit 12 and applies the label 2A by stroking, so that the label 2A is brought into close contact with the label holding unit 12 and securely held. In the glue applying means 14 and 15, glue discharged from a discharge port, which will be described later, is applied to a predetermined position of the label 2 </ b> A held by the label holding unit 12 of the transfer drum 10. The label 2A to which the glue is applied is attached to the outer peripheral surface of the container 18 that has been conveyed by the container conveying device 16 at the label attaching position B.

  On the other hand, the container 18 to which the label 2 </ b> A is affixed is conveyed by the supply conveyor 20, separated at a predetermined interval by the infeed screw 22, and delivered to the inlet star wheel 24. The inlet star wheel 24 rotates and conveys the received container 18 and supplies the container 18 to the rotary container conveying device 16. The rotating body 26 of the container transport device 16 is provided with a large number of container bases 26a on the outer periphery thereof at equal intervals in the circumferential direction, and the container 18 placed on the container base 26a is provided by a container holding means (not shown). It is held and rotated and conveyed. The container transport device 16 is operated in synchronism with the label transfer drum 10, and each container 18 being transported receives the label 2 </ b> A held on each label holding portion 12 of the transfer drum 10 at the label attaching position B. It is pasted. The container 18 with the label 2A attached is rotated and conveyed by the container conveying device 16, delivered to the outlet star wheel 28, discharged onto the discharge conveyor 30, and sent to the next step.

  Next, the configuration of the transfer drum 10 will be described with reference to FIG. The transfer drum 10 is rotatably installed on the base plate 32. A support cylinder 34 is fixed through the base plate 32 in the vertical direction, and an upright rotating shaft 40 is rotatably supported via upper and lower ball bearings 36 and 38 held in the support cylinder 34. A cylindrical member 42 is fitted to the upper outer peripheral surface of the rotating shaft 40 extending above the support cylinder 34. The cylindrical member 42 is connected to the outer surface of the rotating shaft 40 by connecting means such as a key, and rotates integrally with the rotating shaft 40 and can be moved up and down relatively to adjust the height. Yes. Further, a cylindrical cover 44 is fixed to the outer periphery of the cylindrical member 42 and rotates integrally with the rotary shaft 40 and the cylindrical member 42.

  A circular plate 46 (hereinafter referred to as a fixed plate) that is horizontally fixed via a support column (not shown) is disposed at substantially the same height as the lower end portion of the cylindrical member 42. A ball bearing 48 is disposed between the outer periphery of the lower end of the cylindrical member 42 and the inner peripheral surface of the fixed plate 46, and connects the cylindrical member 42 that rotates with the rotary shaft 40 and the fixed plate 46. An annular sliding member 50 is fixed to the upper surface of the outer peripheral portion of the fixed plate 46. The fixed plate 46 and the annular sliding member 50 are formed with a fixed-side vacuum passage which will be described later.

  A flange 44a is formed at the lower end of the cylindrical cover 44 fixed to the upper outer periphery of the rotating shaft 40, and a circular rotating plate 52 is fixed to the lower surface of the flange 44a. The rotating plate 52 slides on the upper surface of the annular sliding member 50 when rotating. The transfer drum 10 that holds and rotates the label 2 </ b> A is attached to the outer periphery of the rotary plate 52. When the rotary plate 52 is rotated by the rotation of the rotary shaft 40, the transfer drum 10 is integrated with the rotary plate 52. Rotate. The rotating shaft 40 is connected to rotating means (not shown) below the base plate 32 and is driven to rotate.

  The transfer drum 10 has an annular bottom surface 10a and a cylindrical wall surface (hereinafter referred to as a cylindrical portion) 10b raised on the outer periphery of the bottom surface 10a. A plurality of label holding portions 12 are formed on the outer surface of the cylindrical portion 10 b of the transfer drum 10. In this embodiment, four label holding portions 12 are formed on the outer peripheral surface of the cylindrical portion 10b at equal intervals in the circumferential direction (see FIG. 1). Each label holding portion 12 is configured to hold two locations, a front end portion and a rear end portion in the conveyance direction of the label 2A, and has a front-side protruding portion 12a and a rear-side protruding portion 12b. . Both the projecting portions 12a and 12b hold the front end portion and the rear end portion including the region to which the paste of the label 2A is applied. The protrusion 12a shown on the left side of the transfer drum 10 in FIGS. 3 and 4 is a protrusion on the front side in the rotation direction of the transfer drum 10 of one label holding part 12 holding one label 2A. The protrusion 12b shown on the right side of the figure is the protrusion of the label holding part 12 on the rear side in the drum rotation direction. FIGS. 3 and 4 show a protruding portion 12b on the rear side of one label holding portion 12, and a protruding portion 12a on the front side of another label holding portion 12 positioned on the rear side in the rotational direction. ing.

  The front side protruding portion 12a (the left side protruding portion in FIGS. 3 and 4) of the label holding portion 12 has a substantially trapezoidal shape when viewed from above. That is, the length of the upper surface side of the portion protruding from the outer peripheral surface of the transfer drum 10 is shorter than the bottom surface side (the outer peripheral surface side of the transfer drum 10), and both side surfaces connecting the bottom surface and the upper surface are inclined surfaces. ing. Further, the upper surface has an arc shape concentric with the arc of the bottom surface (which coincides with the outer peripheral surface of the transfer drum 10). On the other hand, the rear-side protrusion 12b (the right-side protrusion in FIGS. 3 and 4) has an upper surface shorter than the bottom surface and an inclined side surface on the front side in the rotational direction, but the rear side surface is substantially linear. (Radial straight line). The bottom surface and the top surface of the projecting portion 12b have an arc shape similar to that of the projecting portion 12a on the front side. The front-side protrusion 12a and the rear-side protrusion 12b have the same height (the same amount of protrusion from the outer peripheral surface of the cylindrical portion 10b). Further, both the projecting portions 12a and 12b have a smooth surface in which the unevenness is suppressed as much as possible in the shape of the surface held in contact with the label 2A.

  Of the front and rear projecting portions 12a and 12b, the rear projecting portion 12b is formed of a material having slight adhesiveness such as silicon, butyl-based or urethane-based rubber material. In this embodiment, when applying the hot melt by the paste applying means 14 and 15 to be described later, the temperature of the hot melt to be applied is set to the front side in order to make the hot melt adhesive force different between the front end and the rear end of the label. The hot melt having a higher temperature is applied to the label 2A held on the rear protrusion 12b than the label 2A held on the protrusion 12a, and is held by the rear protrusion 12b. Since the label 2A has a high possibility of deformation due to heat, only the rear protrusion 12b is made of a material having slight adhesiveness. By making it from an adhesive material, the adhesiveness between the holding part 12b on the rear side and the label 2A is improved, and the label 2A is peeled off from the protruding part 12b on the rear side of the label holding part 12 when hot melt is applied. So that there are no floating parts. By sticking the label 2A to the protruding portion 12b on the rear side in this way, it is possible to avoid a problem such as deformation due to heat acting locally on a part of the label 2A. Further, the front and rear protrusions 12a and 12b have elasticity and are recessed when pressed from the upper surface side. Note that not only the rear protrusion 12b but also the front protrusion 12a may be made of an adhesive material such as silicon. Further, the protrusions 12a and 12b do not need to be made of an adhesive material as a whole. For example, the protrusions 12a and 12b may be made of a material having at least an adhesive surface such as a structure in which a rubber surface is coated with silicon. Furthermore, it is good also considering only the area | region where glue is applied to a label as the elastic body which has adhesiveness instead of the both protrusion parts 12a and 12b whole.

  An arc-shaped groove 46a is formed in a portion of the upper surface of the fixed plate 46 where the sliding member 50 is fixed, and vacuum is introduced through a pipe 54 connected to the lower surface side. . In the annular sliding member 50 fixed on the fixed plate 46 so as to cover the arc-shaped groove 46 a, a range in which the hole 50 a penetrating vertically overlaps the arc-shaped groove 46 a of the fixed plate 46. Are formed in large numbers. The arc-shaped groove 46a and the through hole 50a are provided on the label 2A held by the label holding unit 12 from a position slightly upstream of the transfer position A (see FIG. 1) where the transfer drum 10 receives the label 2A from the transfer drum 8. Is formed up to the attaching position B where the container 18 is attached to the container 18.

  On the other hand, in the upright cylindrical portion 10 b of the transfer drum 10, a plurality of suction ports 10 e (see FIG. 2, see FIG. 3) open to the outer surface on the wall surface other than the protruding portion 12 b on the rear side of the label holding portion 12. And not shown in FIG. 4). These suction ports 10e include a longitudinal passage 10c formed in the cylindrical portion 10b of the transfer drum 10, a radial passage 10d formed in the bottom 10a, a passage 52a in the rotary plate 52 connected to the passage 10d, and the like. Via a vacuum inlet 52 b that opens on the lower surface of the rotating plate 52. Although the suction port 10e is also formed in the front-side protruding portion 12a, the suction port 10e is formed so as to open outside the region where the hot melt is applied. Further, the suction port 10e may be formed on the surface of the rear protruding portion 12b as long as it is outside the region where hot melt is applied. When the transfer drum 10 rotates with the rotation of the rotating shaft 40, the vacuum introduction port 52b of the rotating plate 52 communicating with each suction port 10e of the cylindrical portion 10b is formed in the through-hole formed in the sliding member 50 on the fixed side. In the portion overlapping with 50a, the vacuum acts on the suction port 10e to adsorb the label 2A. Further, when the vacuum introduction port 52b rotates and reaches the label attaching position B, the vacuum is disconnected from the through hole 50a of the sliding member 50 and the arc-shaped groove 46a of the fixing plate 46, and the vacuum is cut off and held. The label 2A is released. In this embodiment, immediately after the vacuum of the suction port 10e is shut off, air is blown out from the suction port 10e for a short time so that the label 2A is reliably delivered to the container 18.

  A stroking roller 13 is disposed on the outer side of the cylindrical portion 10 b of the transfer drum 10 so as to face the transfer drum 10. The scissoring roller 13 is disposed on the downstream side of the label delivery position A from the delivery drum 8 to the transfer drum 10 and on the upstream side of the glue applying means 14 described later. Since the protruding portion 12b on the rear side of the label holding portion 12 provided on the transfer drum 10 has adhesiveness, the label 2A delivered from the delivery drum 8 does not need to be sucked by vacuum. Although it can be held, the label 2A is prevented from being deformed by the local action of heat when the hot melt is applied in the next step with more reliable adhesion.

  Further, two paste applying means (front glue applying means 14 and rear glue applying means 15) are provided on the outer side of the cylindrical portion 10b of the transfer drum 10 so as to face the transfer drum 10. These glue applying means 14 and 15 are located downstream of the scissoring roller 13 and upstream of the label attaching position B where the label 2A is attached to the container 18 from the label holding portion 12 of the transfer drum 10. Has been placed. The front glue applying means 14 applies the glue to the area where the glue set on the portion of the label 2A held by the front protrusion 12a of the label holding part 12 is applied. The cloth means 15 is adapted to apply glue to the area of the label 2A to which the glue set on the portion held by the rear protrusion 12b is applied. Since the two glue applying means 14 and 15 have the same configuration, only the one (front glue applying means) 14 will be described. As shown in FIG. 2, the glue applying means 14 is mounted on a mounting base 56 via an air cylinder 58 so that the operation of the air cylinder 58 can advance and retract toward the transfer drum 10. It has become.

  The glue applying means 14 includes a hot melt coating head 60 in which a discharge port 60a for discharging glue (hot melt) is formed on the side facing the transfer drum 10 (see FIGS. 4 and 5). The hot melt coating head 60 has a vertically long discharge port 60a slightly shorter than the width of the label 2A (the vertical length when the label 2A is held by the holding portion 12 of the transfer drum 10). The discharge port 60 a is connected to a glue storage part 14 a provided in the main body part of the glue application means 14 via a passage 60 b (see FIG. 4) inside the hot melt coating head 60. Further, the glue storage part 14a is connected to a glue supply means 64 (not shown, but constituted of a glue storage tank and a pump) (see FIG. 2). In this embodiment, the glue discharge port 60a is composed of a single vertically long opening. However, the shape of the discharge port 60a is not limited to this, and a large number of small openings are arranged at equal intervals. It can be selected as appropriate, for example, by arranging or forming an opening only in a portion where paste needs to be applied.

  As shown in FIGS. 4 and 5, the hot melt coating head 60 has a flat surface 60c having a narrow width at a portion closest to the transfer drum 10 side. A discharge port 60a is formed. One side portion 60d (the side portion on the side where the label 2A held by the holding portion 12 of the transfer drum 10 approaches) is the flat surface 60c, which is the front side in the rotation direction of the flat surface 60c in which the discharge port 60a is formed. It is an arc-shaped surface that is continuous with. Further, the other side portion corresponding to the rear side in the rotation direction is formed by two inclined surfaces 60e and 60f that are retreated in a direction away from the outer surface of the transfer drum 10. In particular, the inclination angle of the inclined surface 60e that continues from the discharge port 60a is made steep so that glue does not adhere to this portion. As shown in FIG. 4, the arc-shaped side portion 60d of the hot melt coating head 60 can contact the label 2A in the vicinity of the connecting portion with the flat surface 60c, but the opposite side portions 60e and 60f are labeled 2A. There is no contact at all. In this embodiment, two paste applying means 14 and 15 are provided so that they can move forward and backward independently. The front glue applying means 14 is advanced by the air cylinder 58 when the front protrusion 12a of the label holding part 12 approaches, and retreats to avoid interference when the rear protrusion 12b approaches, and is used for the rear. The glue applying means 15 is advanced by the air cylinder 58 when the rear side protruding portion 12b approaches, and retreats when the front side protruding portion 12a approaches.

  The operation of the labeler according to the above configuration will be described. A long label 2 fed out from a roll label held on a label stand (not shown) is sent to a cutter 6 having a pair of rotating bodies 6A and 6B via a plurality of rollers 4 and is supplied to a container 18. It is cut into a predetermined length according to the size. The cut label 2A is delivered to the transfer drum 10 via the delivery drum 8. The transfer drum 10 is provided with four label holding portions 12 including a pair of protrusions 12a and 12b provided at the front and rear in the rotation direction at equal intervals, and the leading end side of the cut label 2A is in the rotation direction. It is placed on the front-side protrusion 12a and is sucked and held from the suction port 10e that is open outside the region where the hot melt is applied. On the other hand, the rear end side of the label 2A is placed on the protruding portion 12b on the rear side in the rotation direction and is held by the adhesive force of silicon. An intermediate portion between the front end portion and the rear end portion of the label 2 </ b> A held by the protrusions 12 a and 12 b before and after the holding portion 12 acts on the suction port 10 e that opens on the outer peripheral surface of the cylindrical portion 10 b of the transfer drum 10. Adsorbed and held by vacuum.

  When the label 2A held on the label holding portion 12 of the transfer drum 10 rotates and reaches the position of the scissoring roller 13, the label 2A is placed on the upper surface of the rear protruding portion 12b made of a silicon material. The part that is in contact with the scissor roller 13 is scrubbed and is in close contact with the label holder 12 made of silicon material and is securely held. In addition, as long as the protrusion part 12b of the back side is a material which has adhesiveness, you may employ | adopt materials other than a silicon | silicone.

  The label 2A that is in close contact with the upper surfaces of the protrusions 12a and 12b before and after the label holding part 12 is transferred to the position of the next glue applying means 14 and 15 by the rotation of the transfer drum 10. When the labeler is not operating, the glue applying means 14 and 15 are moved backward by the air cylinder 58 so that the discharge port 60a of the hot melt coating head 60 does not contact the transfer drum 10 side. During operation, the paste applying means 14 and 15 are moved forward and backward toward the transfer drum 10 side, and the flat surface 60c on which the discharge port 60a of the hot melt coating head 60 is formed is attached to the label 2A. The portions held by the corresponding projecting portions 12a and 12b of the holding portion 12 are brought into contact with each other.

  When the label 2A held on the front-side protruding portion 12a of the holding portion 12 of the transfer drum 10 rotates and reaches the front surface of the front glue applying means 14, the front glue applying means 14 is advanced. . The leading end of the portion of the label 2A that is held in close contact with the upper surface of the front-side protruding portion 12a of the holding portion 12 is slightly on the inclined surface on the front side in the rotational direction. The label 2A on the ten protrusions 12a and the flat surface 60c of the hot melt coating head 60 start to contact smoothly without interference.

  When the flat surface 60c of the hot melt coating head 60 starts to contact the label 2A, glue is supplied from the glue supply means 64 to the glue application means 14 by a signal from the control device, and the hot melt coating head 60 is discharged from the discharge port 60a. It is discharged and applied to the label 2A. The timing of starting the application is determined by the position signal (encoder pulse signal) of the transfer drum 10, and the front protrusion 12a holding the tip of the label 2A has reached a predetermined position. When this is detected, the discharge of glue is started, and thereafter, measurement is performed by a timer, and the discharge of glue is stopped after a predetermined time has elapsed. When the width to be applied to the label 2A is large, the glue is discharged for a long time accordingly. In this embodiment, glue is not discharged for a time required to apply to the required application width (width in the rotation direction), and is discharged for a time slightly shorter than that time, and then stopped. The remaining part of the required application width is applied by wiping away the glue remaining at the discharge port 60a with the label 2A. When the portion of the label 2A held by the front-side protruding portion 12a passes the paste applying means 15 on the rear side after the paste is applied by the paste applying means 14 on the front side, The glue applying means 15 on the rear side is retracted by the air cylinder 58 so as not to interfere. In addition, the front glue applying means 14 is set to discharge hot melt heated to 110 degrees, and the rear glue applying means 15 is set to discharge hot melt heated to 140 degrees, whereby the label is set. The viscosity of the hot melt applied between the front end portion and the rear end portion of the sheet is changed, the label front end portion that adheres to the container 18 is easily peeled off, and the label rear end portion that adheres to the label front end portion is strongly bonded. It will be.

  After applying a predetermined width of glue on the front side in the rotational direction of the label 2A held by the label holding unit 12, a portion of the intermediate part of the label 2A that is adsorbed and held by the vacuum on the outer peripheral surface of the transfer drum 10 Although it passes through the front surface of the paste applying means 14, this portion does not come into contact with the hot melt coating head 60 because it retreats inward in the radial direction with respect to the protrusion 12 </ b> A. Thereafter, when the portion of the label 2A held by the rear side protruding portion 12b reaches the position of the hot melt coating head 60 of the rear glue applying means 15, the glue applying means 15 is advanced by the air cylinder 58. Then, the label 2A comes into contact with the hot melt coating head 60, and the paste is applied to the region where the paste set on the rear end portion of the label 2A is applied in the same manner as the front end portion of the label 2A. Note that when the portion of the label 2 </ b> A held by the rear-side protruding portion 12 b passes through the front glue applying means 14, the front glue applying means 14 is retracted by the air cylinder 58. Further, the widths of the projecting portions 12a and 12b of the holding portion 12 are larger than the width of the glue applied to the label 2A, and even after the application of the glue with the necessary width to the label 2A is finished, The outlet 60a abuts on the label 2A held by the holding unit 12 and performs an action of scraping off the glue remaining in the discharge port 60a.

  On the other hand, the container 18 to which the label 2A is adhered is transported by the supply conveyor 20, separated at a predetermined interval by the infeed screw 22, and delivered to the inlet star wheel 24. The inlet star wheel 24 rotates and conveys the received container 18 and delivers it to the container conveying device 16. The container transport device 16 rotationally transports the container 18 to the label attaching position B. The container 18 thus supplied to the container transport device 16 and to which the label 2A is attached is detected by a sensor (not shown), and when the container 18 is detected, the label 2A corresponding to the container 18 is supplied. . In this embodiment, when the container 18 is detected, the label 2A attached to the container 18 is cut by the cutter 6 and transferred to the transfer drum 10 to apply glue. When the container 18 is not detected, the supply of the label 2A to the transfer drum 10 is stopped. Further, before the holding part 12 that should have held the label 2A reaches the position of the glue applying means 14, the hot melt coating head 60 is moved backward to the holding part 12 that does not hold the label 2A. Avoid sticking.

  The container 18 transported by the container transport device 16 is rotated by a rotating mechanism (not shown) before reaching the label attaching position B, and the label 2A held by the front protrusion 12a of the label holding part 12 is used. When the front end portion is pressed against the container 18, the hot melt applied to the label 2 A adheres to the container 18, and the label 2 A moves away from the label holding unit 12 due to the adhesive force and rotation of the container 18, and on the outer periphery of the container 18. It is wound, the rear end portion of the label 2A is overlapped with the front end portion, and the hot melt applied to the rear end portion is bonded to the front end portion of the label 2A. The container 18 to which the label 2 </ b> A is attached is rotated and conveyed by the rotation of the rotating body 26 of the container conveying device 16, and is discharged onto the discharge conveyor 30 by the outlet star wheel 28. In the above-described embodiment, the two glue applying means 14 and 15 are configured to be able to move forward and backward, respectively, and advance when the corresponding protrusions 12a and 12b reach, and retreat when the corresponding protrusions 12a and 12b reach. However, the present invention is not limited to such a configuration. For example, the front-side protruding portion 12a is fixed and the rear-side protruding portion 12b is placed outside the front-side protruding portion 12a. You may comprise so that it can advance / retreat to the high position which protruded, and the low position which retracted inside. In that case, when the rear protrusion 12b reaches the front glue applying means 14, the rear protrusion 12b is retracted to prevent interference with the glue applying means 14, and the front protrusion When the part 12a reaches the glue applying means 15 for the rear, it is formed lower than the protruding part 12b on the rear side, so that it does not interfere even if the glue applying means 15 is not retracted.

  FIG. 6 is a plan view of a labeler according to the second embodiment, which is different from the first embodiment in the configuration of the label transfer drum and the container transport device shown in FIG. Since it is common to the first embodiment, the same or common parts are denoted by the same reference numerals, description thereof is omitted, and only different parts will be described.

  As shown in FIG. 7, mandrels 170 are attached to the outer periphery of the rotating body 172 of the container transport device 116 at equal intervals in the circumferential direction. The mandrel 170 is formed with a suction hole (not shown) toward the outer surface side, and the label 2A can be sucked and held by suction from the suction hole. The mandrel 170 is rotated by a servo motor 174. A container base 176 is disposed immediately below these mandrels 170, and the axis of the container 118 supplied on the container base 176 is aligned with the axis of the mandrel 170. A top locator 178 is inserted in the center of each mandrel 170 so as to be movable up and down. The top locator 178 is moved up and down by a lifting cam and a cam follower 180 provided on the upper portion of the rotating body 172. A picker 182 that can move up and down between the upper mandrel 170 and the container 118 supplied on the lower container stand 176 is provided. The picker 182 is moved up and down by a lifting cam and cam follower 184 and can be opened and closed by an opening and closing cam and cam follower 186. The picker 182 has a suction hole (not shown) formed toward the inner surface side, and ascends and sucks and holds the outer surface side of the label 2A that is wound around the mandrel 170 to hold the lower container. 118 is fitted.

  In the first embodiment, the paste is applied to the front end portion and the rear end portion of the label 2A held by the label holding portion 12 of the label transfer drum 10 by the paste applying means 14 and 15, In the second embodiment, the label 2A is wound around the mandrel 170 and then attached to the container 118. That is, with the mandrel 170 sucking and holding the front portion of the label 2A, the label 2A is wound around the outer periphery of the mandrel 170, and the rear end of the label 2A is overlapped and adhered to the front end. Accordingly, the label holding portion 112 provided on the label transfer drum 110 is formed as a protruding portion 112b only at one place corresponding to the rear protruding portion 12b of the first embodiment. Further, only one glue applying means 114 for applying hot melt is provided on the portion of the label 2A held by the protruding portion 112b.

  In this embodiment, the label holding portion 112 (rear side protruding portion 112b) formed on the outer peripheral surface of the transfer drum 110 holds the rear end portion of the label 2A by adhesiveness such as silicon, and is boiled by the stroking roller 13. At the same time, the rear end of the label 2A is brought into close contact with the surface of the protrusion 112b. Subsequently, glue is applied only to the rear end of the label 2A held by the projection 112b by the glue applying means 114. When the label 2A reaches the label application position B by the rotation of the transfer drum 110, the tip side of the label 2A to which the glue is not applied is adsorbed by the suction hole of the mandrel 170, and the transfer drum 10 and the mandrel 170 rotate. The label 2A is wound around the mandrel 170, and the glue at the rear end is adhered to the front side of the label 2A to form a cylinder. Thereafter, the picker 182 that has been lifted attracts the outer surface of the cylindrical label 2A that is wound around the mandrel 170, and the top locator 178 is lowered to hold the head of the container 18 and position the picker. 182 is lowered, and the cylindrical label 2A is extracted from the mandrel 170 and fitted into the lower container 18. Also in this embodiment, the label holding portion 112 of the label transfer drum 110 is formed of an adhesive material such as silicon, so that the same effect as in the first embodiment can be obtained.

2A Label 10 Transfer drum 12 Label holding part 13 Brooming means (roller)
14 Glue application means 18 Container 170 Mandrel

Claims (2)

A transfer drum having a suction port formed on the surface for sucking and holding the label; a rotating means for rotating the transfer drum; and a glue applying means for applying glue to the label held on the transfer drum. While the drum receives and rotates the label, the labeler applies glue to a predetermined position of the label and winds the label around the outer periphery of the mounted object such as a container or mandrel.
A material having an adhesive property on the holding area of the label holding part facing the area where glue is applied to the label, formed on the surface of the transfer drum by protruding a label holding part for holding the rear end part of the label on the outer periphery. The labeler is characterized in that the suction port is not formed in the holding region.   A scoring unit is arranged on the path through which the transfer drum receives the label and transports it to the glue applying unit, and contacts the label held by the holding unit and applies the label to the holding unit. Item 2. The labeler according to item 1.

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