JP2013103739A - Apparatus and method of attaching resin label, and vessel attached with resin label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat and cure, when overlapping the rear end portion 2a of a resin label 2 on the front end portion to form a tubular shape, a portion of an end 2aa where no paste is applied.SOLUTION: The rear end portion 2a of the resin label 2 held on a transfer drum 10 is applied with paste by a paste application means 14, is wound around a mandrel 28 to overlap and stick the rear end portion 2a onto the front end portion and form a tubular shape. After that, the rear end portion 2a including the portion of the end 2aa where no paste is applied is heated by a heater 176 at a temperature higher than a heating temperature when shrinking afterward and for a time shorter than a time by which the resin label 2 is fused and attached. The end 2aa of the rear end portion 2a of the resin label 2, where no paste is applied, is cured, so that the same does not curl or deform and the appearance as a product is improved.

Description

  The present invention relates to a labeler that mounts a resin label on a container, and in particular, after a resin label is wrapped around a container or a mandrel, the rear end portion is overlapped on the front end portion and bonded to form a cylindrical label The present invention relates to a resin label mounting apparatus for heating and compressing the cylindrical label, a resin label mounting method, and a container on which a resin label is mounted.

  There is already known a labeler in which a belt-like label is wound around an outer peripheral surface of a container (see, for example, Patent Document 1). In the labeler described in Patent Document 1, a holding part for holding a label is formed on the outer peripheral surface of a transfer drum rotated by a rotating means, and the hot melt coating is applied to the label held and held by this holding part. Hot melt is applied from the head, and this label is wound around a container and attached. In the labeler described in Patent Document 1, hot melt is applied by bringing a discharge port of a hot melt coating head into contact with a label held by a label holding unit.

JP 2009-202897 A

  With the labeler structure described in Patent Document 1, there is no stringing after hot melt application, the hot melt can be thinly applied to the label, and the finished appearance is very excellent. However, when the belt-like label is wound around the entire circumference of the container and then heated to shrink, the following problems occur when the coating method described in Patent Document 1 is adopted. In the above application method, the adhesive (hot melt) is applied by bringing the discharge port of the hot melt coating head into contact with the label, and after the adhesive is discharged, the adhesive is scraped off. When trying to apply glue to the edge, glue sticks out of the label and causes stringing. Therefore, as shown in FIG. 10 (a), when applying paste to the rear end portion 2a of the label 2 (the portion indicated by symbol P in the figure is the paste application region), the paste is applied to the most end portion. A region 2aa that cannot be applied is generated.

  When there is a region 2aa where no glue is applied to the end of the label wound around the container as described above, as shown in FIG. 10 (b), it is in a state of floating on the front end portion 2b of the label. In such a state, when it is sent to the shrink tunnel and contracted by heating, the portion 2aa is warped (see FIG. 5C), and there is a problem that the appearance of the finished product is deteriorated.

  Therefore, instead of bonding by hot melt, an attempt was made to weld the rear end portion to the front end portion by heating with a heater in a state where the rear end portion was superimposed on the front end portion of the resin label. If it is the method by the heating by a heater, since it can weld to the terminal of a rear-end part, it looks good. However, when a resin label is wound around the mandrel and the rear end portion and the front end portion are welded, the rear end portion that overlaps the outside of the front end portion is not directly sucked from the suction hole of the mandrel, and thus tends to float. There is a problem. When heat welding is attempted in a state where the end portion is lifted in this way, there is a problem that only the lifted end portion of the rear end portion is melted and cannot be well welded. In particular, this problem is likely to occur when driving at high speed, and it is difficult to increase the speed of the labeler.

  Also, use another application means such as an application roller to apply glue to the end of the rear end portion of the label, and use a mandrel to overlap the rear end of the label with the front end and form a cylinder, or attach it to the container, or When directly shrinking after being wrapped around a container, there is a variation in the thickness of the glue applied in the area where the glue is applied, and the trace of the place where the glue is applied thickly after shrinking is noticeable was there. Furthermore, there is a problem in that the portion to which the paste is applied is pulled due to the shrinkage of the label at the time of shrinking, and the rear end of the label is separated from the front end due to the pulling force of the adhesive.

  The present invention has been made to solve the above problems, and even when glue is applied to the rear end portion and adhered to the front end portion, the end portion, which is a region where no glue is applied, curls, etc. Provide a resin label mounting device and a resin label mounting method that do not cause deformation, and even if the coating thickness of the glue varies, it looks good after shrinking and reliably adheres the rear end of the label to the front end. An object of the present invention is to provide a resin label mounting apparatus and a resin label mounting method that can be used. Furthermore, it aims at providing the container with which the above resin labels were mounted | worn.

  The present invention is provided with a transfer drum for holding and transferring a resin label, a paste applying means for applying glue to a rear end portion of the resin label held by the transfer drum, and a plurality of rotating bodies, A mandrel that receives and winds up the resin label from the transfer drum, superimposes the rear end portion of the resin label on the front end portion, adheres it, forms it in a cylindrical shape, and holds it by suction; and drive means for rotating the mandrels respectively. , A container base for placing the container disposed and supplied corresponding to the mandrel, a fitting means for removing the resin label from the mandrel and fitting the container, and heating the resin label fitted to the container A heating and shrinking means for shrinking, and a heating means for contacting the rear end portion of the resin label formed into a cylindrical shape by the mandrel and heating the contacted portion. The temperature of the heat-shrinking means is set to be higher than the temperature of the heat shrinking means, and the rear end portion of the resin label is heated and cured by contacting for a time shorter than the time during which the resin label is welded. To do.

  According to a second aspect of the present invention, there is provided a transfer drum for holding and transferring a resin label, glue applying means for applying glue to a rear end portion of the resin label held on the transfer drum, and a plurality of rotating bodies. A mandrel that receives the resin label from the transfer drum and winds it, superimposes the rear end portion of the resin label on the front end portion, adheres it, forms it into a cylindrical shape, and holds it by suction. Drive means for carrying out, a container base for placing a container arranged and supplied corresponding to the mandrel, a fitting means for taking out a resin label from the mandrel and fitting it in the container, and a resin fitted in the container A heating / shrinking means for heating and shrinking the manufactured label; and a heating means for contacting the rear end portion of the resin label formed into a cylindrical shape by the mandrel and heat-welding the contacted portion. It is characterized in that the.

  Further, the third aspect of the present invention includes a step of applying glue to the rear end portion of the resin label, and a cylindrical shape in which the resin label is wrapped around the outer periphery of the mandrel and the rear end portion of the resin label is overlapped with the front end portion. A step of forming, a step of heating the rear end portion of the resin label, a step of removing the cylindrical resin label from the mandrel and fitting it in a container, and a step of heat shrinking the resin label, The temperature at which the rear end portion of the resin label is heated is set higher than the temperature at which the resin label is heated and shrunk, and the resin label is heated for a time shorter than the time at which the resin label is welded. The end portion is heated to be cured.

  In addition, the fourth aspect of the present invention is a cylindrical shape in which a paste is applied to the rear end portion of the resin label, the resin label is wrapped around the outer periphery of the mandrel, and the rear end portion of the resin label is overlapped with the front end portion. A step of forming, a step of heat-welding the rear end portion of the resin label, a step of removing the cylindrical resin label from the mandrel and fitting it in a container, and a step of heat-shrinking the resin label It is characterized by.

  5th invention mounts the transfer drum which hold | maintains and transfers a resin-made label, the paste application means to apply | coat glue to the rear-end part of the resin label currently hold | maintained at this transfer drum, and the supplied container are mounted. A container base, a rotating means for rotating the container base, and a heating / shrinking means for heating and contracting the resin label fitted in the container, and the resin label is wound around the outer periphery of the container. In the resin label mounting device that heats and shrinks the resin label and attaches it to the container after the rear end portion is overlapped and adhered to the front end portion, it contacts the rear end portion of the resin label that is formed into a cylindrical shape. Providing a heating means for heating the contacted part, setting the temperature of the heating means to be higher than the temperature of the heating shrinking means, and contacting the resin label for a time shorter than the time for welding the resin label, Made It is characterized in that the heating and curing the rear end portion of the bell.

  According to a sixth aspect of the invention, there is provided a transfer drum for holding and transferring a resin label, glue applying means for applying glue to a rear end portion of the resin label held on the transfer drum, and a supplied container. A container base, a rotating means for rotating the container base, and a heating / shrinking means for heating and contracting the resin label fitted in the container, and the resin label is wound around the outer periphery of the container. In the resin label mounting device that heats and shrinks the resin label and attaches it to the container after the rear end portion is overlapped and adhered to the front end portion, it contacts the rear end portion of the resin label that is formed into a cylindrical shape. And a heating means for heating and welding the contacted portion.

  The seventh invention is a step of applying glue to the rear end portion of the resin label, a step of winding the resin label around the outer periphery of the container, and molding the rear end portion into a cylindrical shape superimposed on the front end portion, While having a step of heating the rear end portion of the resin label and a step of heat shrinking the resin label, the temperature for heating the label rear end portion is set to a temperature higher than the temperature for heat shrinking the label, The rear end portion of the resin label is heated and cured by heating for a time shorter than the time during which the resin label is welded.

  The eighth invention includes a step of applying glue to the rear end portion of the resin label, a step of winding the resin label around the outer periphery of the container, and forming the cylindrical shape in which the rear end portion is superimposed on the front end portion, It has the process of heat-welding the rear-end part of a resin-made label, and the process of heat-shrinking a resin-made label, It is characterized by the above-mentioned.

  A container according to a ninth aspect of the present invention is to heat a rear end portion of a cylindrical resin label in which glue applied to a rear end portion of a resin label is overlapped and adhered to the front end portion of the resin label. After curing, a resin label that is heat-shrinked at a temperature lower than the cured heating temperature is attached.

  A container according to a tenth aspect of the present invention is to heat a rear end portion of a cylindrical resin label in which glue applied to a rear end portion of a resin label is overlapped and adhered to the front end portion of the resin label. After the welding, a heat-shrinked resin label is attached.

  The resin label mounting apparatus and the resin label mounting method of the present invention have a temperature higher than the heating temperature of the heat welding means on the rear end portion of the resin label and the time during which the resin label is welded by heating. Since the end portion is cured by contacting the heating means for a short time, when the resin label attached to the container is heated and contracted in a later step, the end of the resin label to which the paste is not applied is deformed. There is an advantage that the appearance as a product is improved. In addition, even if there is a variation in the thickness of the glue applied, the post-shrinking glue marks are not noticeable and the product looks good, and the rear end of the label can be securely adhered to the front end regardless of the adhesive viscosity. There is an advantage. Furthermore, there is an advantage that the container to which the heat-shrinked resin label is attached can be prevented from being deformed when the heat-shrinkage of the resin label is performed, and the appearance as a product can be improved.

FIG. 1 is a plan view showing a simplified arrangement of the entire resin label mounting apparatus. Example 1 FIG. 2 is a longitudinal sectional view of the label transfer drum and the glue applying means. FIG. 3 is an enlarged cross-sectional view showing the main parts of the label transfer drum and the glue applying means. FIG. 4 is a perspective view of the hot melt coating head. FIG. 5 is a longitudinal sectional view of the container transfer device and the heating means. FIG. 6 is a plan view of the picker. FIG. 7A is a plan view of the heating means, and FIG. 7B is a longitudinal sectional view. FIG. 8 is a view for sequentially explaining the operation of the resin label mounting apparatus. FIG. 9A is an explanatory view showing a state where the rear end portion of the resin label is heated by the heating means, and FIG. 9B is an explanatory view showing a state after the resin label is heated by the heating means. . FIG. 10A is a plan view showing a state in which glue is applied to the rear end portion of the resin label, FIG. 10B is an explanatory view showing a state in which the rear end portion is superposed on and adhered to the front end portion, and FIG. These are explanatory drawings which show the state after performing a heat contraction process.

  A plurality of label holding portions are formed at equal intervals on the outer peripheral surface of the label transfer drum, and a resin label cut to a predetermined length by a cutter is delivered to each label holding portion and held by suction. Glue is applied to the rear end portion of the resin label held by the label holding portion by the glue applying means, but an area where no glue is applied remains at the end of the rear end portion. When the resin label to which the paste is applied reaches the position of the container transport means, the container is supplied to the container base provided on the lower side of the rotating body of the container transport means, and above the container. The resin labels are delivered to the mandrels arranged respectively. First, the front end portion of the resin label is sucked and held on the mandrel, and is wound around the mandrel by rotation (revolution) of the transfer drum and the rotating body of the container transport device and rotation of the mandrel, and the rear end on the front end portion of the resin label. In the state where the end portions are overlapped, they are bonded by the glue. After the resin label is wound around the mandrel and formed into a cylindrical shape, the rotation is stopped by a rotating means that rotates (spins) the mandrel, and the portion where the rear end portion and the front end portion overlap the resin label Direct to the outside of the rotating body in the radial direction. Of the rear end portion of the resin label, the region (terminal) to which no glue is applied is in a floating state without being bonded to the front end portion. A heater is arranged along the mandrel transport path by the rotating body, and the resin label is welded at a temperature higher than the temperature at which the overlapped portion of the resin label is heated and shrunk in a subsequent shrink process. Heat for a shorter period of time. By heating with this heater, the end of the rear end portion of the resin label to which the paste has not been applied is cured. When the container with the cylindrical label is introduced into the shrink tunnel in the subsequent process and heated and shrunk, the end does not curl or otherwise deform, so that the appearance as a product is improved. Achieve the goal.

  Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. First, the entire configuration of the resin label mounting apparatus 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), and the strip-shaped label 2 is pulled out from the roll stand, and a pair of rotating members 6A through a plurality of rollers 4; 6B is sent to the cutter 6 and cut. The resin label 2 cut to a predetermined length by the cutter 6 is delivered to the label transfer drum 10 via the delivery drum 8 at the label delivery position T.

  The label transfer drum 10 is provided with a plurality of (four locations in this embodiment) label holding portions 12 at equal intervals in the circumferential direction on the outer peripheral surface, and each label holding portion 12 holds the label 2 one by one. Hold and rotate. A glue applying means 14 is installed outside the label conveying path on the downstream side of the transfer drum 10 from the label delivery position T from the delivery drum 8. In the glue applying unit 14, glue discharged from a discharge port described later is applied to a predetermined position of the label 2 held by the label holding unit 12 of the transfer drum 10. The label 2 to which glue has been applied is wound around the outer peripheral surface of a mandrel 28 (see FIG. 1 and FIG. 5 described later) that has been rotated and moved by the container transport device 16 at the label delivery position S. Are bonded to form a cylinder.

  On the other hand, the container 18 to which the cylindrical resin label 2 is attached is conveyed by the supply conveyor 20, separated at a predetermined interval by the infeed screw 22, and delivered to the supply star wheel 24. The supply star wheel 24 rotates and conveys the received container 18 and supplies it to the rotary-type container conveyance device 16. The container conveying device 16 rotates and conveys the container 18 supplied from the inlet star wheel 24 on the lower side of the rotating body 26, and receives the resin label 2 from the transfer drum 10 on the upper side of the rotating body 26. The mandrel 28 is wound up to form the cylindrical label 2, and the formed cylindrical label 2 is removed from the mandrel 28 and attached to the container 18. The container 18 to which the cylindrical resin label 2 is attached is rotated and conveyed by the container conveying device 16, delivered to the discharge star wheel 30, and discharged onto the discharge conveyor 32. The container 18 is transported by the discharge conveyor 32, carried into the next shrink tunnel 34, and heated at a predetermined temperature for a predetermined time. When heated, the cylindrical label 2 contracts and adheres to the outer surface of the container 18.

  Next, the configuration of the label transfer drum 10 will be described with reference to FIG. The transfer drum 10 is rotatably installed on the base plate 36. A support cylinder 38 is fixed on the base plate 36, and an upright rotating shaft 44 is rotatably supported via upper and lower ball bearings 40 and 42 held in the support cylinder 38. A cylindrical member 46 is fitted to the upper outer peripheral surface of the rotating shaft 44 extending above the support cylinder 38. The cylindrical member 46 is connected to the outer surface of the rotating shaft 44 by connecting means such as a key. The cylindrical member 46 rotates integrally with the rotating shaft 44 and can move up and down relatively to adjust the height. Yes. Further, a cylindrical cover 48 is fixed to the outer periphery of the cylindrical member 46, and a cap 50 is fixed to the upper end thereof, and rotates integrally with the rotary shaft 44 and the cylindrical member 46.

  A circular plate 52 (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 of the cylindrical member 46. A ball bearing 54 is disposed between the outer periphery of the lower end of the cylindrical member 46 and the inner peripheral surface of the fixed plate 52, and connects the cylindrical member 46 that rotates together with the rotary shaft 44 and the fixed plate 52. An annular sliding member 56 is fixed to the upper surface of the outer peripheral portion of the fixed plate 52. The fixed plate 52 and the annular sliding member 56 are formed with a fixed-side vacuum passage which will be described later.

  A flange 48a is formed at the lower end of the cylindrical cover 48 fixed to the outer periphery of the upper portion of the rotary shaft 44, and a circular rotary plate 58 is fixed to the lower surface of the flange 48a. The rotating plate 58 slides on the upper surface of the annular sliding member 56 when rotating. The transfer drum 10 that holds and rotates the label 2 is mounted on the outer periphery of the rotary plate 58. When the rotary plate 58 is rotated by the rotation of the rotary shaft 44, the transfer drum 10 is integrated with the rotary plate 58. Rotate. The rotating shaft 44 is connected to rotating means (not shown) below the base plate 36 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 has a protruding portion 12a for holding the rear end portion 2a of the label 2 (see FIG. 3 and FIG. 10A). The protruding portion 12a provided near the rear of the label holding portion 12 has a shape seen from above, the upper surface 12aa side being longer than the bottom surface 12ab side, and the side surface 12ac on the front side in the rotational direction is inclined, The side surface 12ad is substantially linear (radial straight line). The upper surface 12aa has an arc shape concentric with the arc of the bottom surface 12ab (which coincides with the outer peripheral surface of the transfer drum 10).

  An arc-shaped groove 52a is formed in a portion of the upper surface of the fixed plate 52 where the sliding member 56 is fixed, and vacuum is introduced through a pipe 60 connected to the lower surface side. . The annular sliding member 56 fixed on the fixed plate 52 so as to cover the arc-shaped groove 52a has a range in which a hole 56a penetrating vertically overlaps the arc-shaped groove 52a of the fixed plate 52. Are formed in large numbers. The arc-shaped groove 52a and the through hole 56a are provided on the label 2 held by the label holding unit 12 from a position slightly upstream of the transfer position T (see FIG. 1) where the transfer drum 10 receives the label 2 from the transfer drum 8. Is formed up to the delivery position S where the is attached to the mandrel 28.

  On the other hand, in the upright cylindrical portion 10b of the transfer drum 10, a plurality of suction ports 10e (see FIG. 2, see FIG. 2) open to the wall surface other than the protruding portion 12a provided on the rear side of the label holding portion 12. 3 is omitted). These suction ports 10e are a longitudinal passage 10c formed in the cylindrical portion 10b of the transfer drum 10, a radial passage 10d formed in the bottom portion 10a, and a passage in the rotary plate 58 connected to the radial passage 10d. It is connected to a vacuum inlet 58b that opens on the lower surface of the rotary plate 58 via 58a and the like. In addition, although the suction port 10e is formed also in the said protrusion part 12a, in this Example, the suction port 10e is formed so that it may open except the area | region which applies a hot melt.

  When the transfer drum 10 rotates with the rotation of the rotating shaft 44, the vacuum introduction port 58b of the rotating plate 58 communicating with each suction port 10e of the cylindrical portion 10b is formed in the through-hole formed in the sliding member 56 on the fixed side. In the portion overlapping 56a, the vacuum can act on the suction port 10e to adsorb the label 2. When the vacuum introduction port 56b rotates and reaches the label delivery position S, the vacuum is cut off from the through-hole 56a of the sliding member 56 and the arc-shaped groove 52a of the fixed plate 52, and the vacuum is held. 2 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 2 is reliably delivered to the mandrel 28. In the label 2, the rear end portion 2 a is held by the protruding portion 12 a of the label holding portion 12, and the front side of the rear end portion 2 a is directly held on the outer surface of the transfer drum 10.

  Further, a paste applying means 14 is provided on the outer side of the cylindrical portion 10 b of the transfer drum 10 so as to face the transfer drum 10. The glue applying means 14 is disposed on the upstream side of the label delivery position S for delivering the label from the label holding unit 12 of the transfer drum 10 to the mandrel 28. The glue applying means 14 is adapted to apply the glue to the area where the set glue is applied in the rear end portion 2a held by the protruding portion 12a of the label 2A. As shown in FIG. 2, the glue applying means 14 is mounted on a mounting base 62 via an air cylinder 64 so that the operation of the air cylinder 64 can advance and retract toward the transfer drum 10. It has become.

  The glue applying means 14 includes a hot melt coating head 66 in which a discharge port 66a for discharging glue (hot melt) is formed on the side facing the transfer drum 10 (see FIGS. 3 and 4). The hot melt coating head 66 has a vertically long discharge port 66a slightly shorter than the width of the label 2 (the vertical length when the label 2 is held by the label holding portion 12 of the transfer drum 10). The discharge port 66 a is connected to a glue storage part 14 a provided in the main body part of the glue applying means 14 via a passage 66 b (see FIG. 3) inside the hot melt coating head 66. Further, the glue storage section 14a is connected to a glue supply means 68 (not shown, but configured from a glue storage tank and a pump) (see FIG. 2). In this embodiment, the glue discharge port 66a is composed of a single vertically long opening. However, the shape of the discharge port 66a 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. In this embodiment, a shrink-compatible paste having a high viscosity is used, and even if the label is pulled during shrinking, it can be firmly bonded without being displaced.

  As shown in FIGS. 3 and 4, the hot melt coating head 66 has a flat surface 66c having a narrow width at a portion closest to the label transfer drum 10 side. The discharge port 66a is formed. One side portion 66d (the side portion on the side where the label 2 held by the label holding portion 12 of the transfer drum 10 approaches) which is the front side in the rotation direction of the flat surface 66c formed with the discharge port 66a is a flat surface. It is an arcuate surface continuing to 66c. Further, the other side portion corresponding to the rear side in the rotation direction is formed by two inclined surfaces 66e and 66f retreated in a direction away from the outer surface of the transfer drum 10. In particular, the angle of inclination of the inclined surface 66e that continues from the discharge port 66a is made steep so that glue does not adhere to this portion. As shown in FIG. 4, the arc-shaped side portion 66d of the hot-melt coating head 66 can contact the label 2 in the vicinity of the connecting portion with the flat surface 66c, but the opposite side portions 66e and 66f are labeled. 2 is not touched at all.

  The configuration of the container transport device 16 will be described with reference to FIGS. 1 and 5. An upright central shaft 72 is disposed on the base 70, and a cylindrical member 76 (hereinafter referred to as a “rotating cylindrical member”) is rotatably supported on the outer periphery thereof via upper and lower bearings 74. A horizontal rotating disk 78 is attached to the center of the rotating cylindrical member 76 in the vertical direction, and rotates integrally with the rotating cylindrical member 76. A plurality of container bases 80 are arranged at equal intervals in the circumferential direction on the outer periphery of the rotating disk 78 (hereinafter referred to as the lower rotating disk) constituting the lower side of the rotating body 26, and the inlet star wheel The containers 18 supplied from 24 are sequentially placed on the container table 80 and are rotated and conveyed by the rotation of the rotating body 26.

  Two horizontal rotating disks (an upper rotating disk 84 and an intermediate rotating disk 86) connected up and down by an upright connecting member 82 are attached to the upper end of the rotating cylindrical member 76. And rotates integrally with the lower rotating disk 78. The rotating body 26 composed of the rotating cylindrical member 76 and the upper, middle, and lower three rotating disks 84, 86, 78, etc. is supplied from a driving means (not shown) via a gear 88 fixed to the outer periphery of the lower end of the rotating cylindrical member 76. The drive is transmitted and rotates. On the lower surface side of the outer peripheral portion of the intermediate rotating disk 86, the mandrels 28 are rotatably supported at equal intervals in the circumferential direction. The upper and lower positions of the mandrel 28 and the container base 80 coincide with each other, and the rotating body 26 rotates (revolves) while keeping the upper and lower positions coincident. The mandrels 28 are rotated by a mandrel rotating servo motor 90 installed on the upper surface of the intermediate rotating disk 86. The mandrel rotation servomotor 90 is controlled by control means (not shown), and controls such as rotation (autorotation) and positioning of the mandrel 28 are performed.

  The mandrel 28 is disposed at the same height as the transfer drum 10 that supplies the resin label 2, and the resin label is applied to the mandrel 28 that has reached the position of the transfer drum 10 (label delivery position S) by the rotation of the rotating body 26. 2 is passed. The outer diameter of the mandrel 28 is slightly larger than the outer diameter of the container 18. Many suction holes (not shown) are formed in the mandrel 28 so as to face the outer surface side, and are connected to a vacuum source (not shown). By sucking from the suction holes, the label 2 is adsorbed to the outer peripheral surface. Can be held.

  An elevating shaft 94 having a top locator 92 fixed to the lower end is inserted through the center of each mandrel 28. A connecting block 96 is attached to the upper end of the lifting shaft 94, and a slider 98 is fixed to the connecting block 96 on the radially inner side of the rotating body 26. The slider 98 is engaged with a vertical guide rail 100 attached to the outer surface side of the upper rotating disk 84 and an annular plate 99 connected to the upper rotating disk 84 via a connecting member 82 therebelow. Guides the raising and lowering of the locator 92. Further, a cam follower 102 is attached to a surface of the connecting block 96 facing the outer side of the rotating body 26, and engages with a cam groove 104a of an annular cam 104 fixed to the outer side of the rotating body 26; The top locator 92 and the lifting shaft 94 are raised and lowered according to the shape of the cam groove 104a.

  A picker 106 that can move up and down between the upper mandrel 28 and the container 18 placed on the lower container stand 80 is provided. The picker 106 is attached to the upper end of an elevating rod 108 that passes vertically through the lower rotating disk 78 via a horizontal attachment plate 110. A connecting block 112 is fixed to the lower end of the lifting rod 108, and a slider 114 is attached to the connecting block 112 on the radially inner side of the rotating body 26. A cam follower 116 is attached on the radially outer side. The cam follower 116 engages with an annular plate cam 120 attached to a fixed base 118 outside the container transport device 16, and moves up and down according to the shape of the plate cam 120, and lifts the picker 106 together with the lift rod 108. Let

  Two horizontal annular plates 124 and 126 are fixed to the lower surface side of the lower rotating disc 78 via a connecting member 122 in the vertical direction, and a guide rail 128 perpendicular to the outer surfaces of the annular plates 124 and 126 is attached. It has been. The slider 114 engages with the guide rail 128 to guide the lifting rod 108 and the picker 106 to move up and down. Further, the picker 106 can be opened and closed, and holds the label 2 wound around the mandrel 28 when closed. The picker 106 includes a pair of holding members 132 and 132 attached to the tips of the two arms 130 and 130 (see FIG. 6), and both the arms 130 and 130 penetrate the lower rotating disk 78, respectively. It is attached to the upper ends of the two rods 134,134. Gears 136 and 136 are provided on the outer circumferences of both rods 134 and 134 and mesh with each other. When one rod 134 is rotated, both rods 134 and 134 and arms 130 and 130 rotate in opposite directions, and a pair of The holding members 132 and 132 are opened and closed. A lever 138 is fixed to one rod 134, and a cam follower 140 is attached to the tip of the lever 138. A picker opening / closing cam 142 is installed on a fixed base 118 outside the rotating body 26, and the lever 134 is swung by the opening / closing cam 142 to rotate the rod 134 and the gear 136, so that both holding members of the picker 106 are held. 132 and 132 open and close.

  As shown in FIG. 6, the picker 106 is separated from the outer surface of the mandrel 28 (or container 18) when opened, and becomes a circular shape having an inner diameter slightly larger than the outer diameter of the mandrel 28 and container 18 when closed. The center of the closed picker 106, the axis of the upper mandrel 28, and the axis of the container 18 placed on the lower container stand 80 are positioned on the same axis. Each picker 106 is connected to a vacuum source (not shown) via a vacuum tube 144, and the outer surface side of the cylindrical resin label 2 wound around the mandrel 28 by a suction hole 132a formed toward the inner surface side. Can be adsorbed.

  A heating means 146 is disposed slightly downstream of the position S in the container transport device 16 that receives the delivery of the label 2 from the transfer drum 10. The rear end portion 2a of the resin label 2 wound around the mandrel 28 and overlapping the front end portion 2b is heated by the heating means 146 to cure the end 2aa to which no glue is attached. (See FIGS. 9A and 9B). The structure of the heating means 146 will be described with reference to FIGS. 5 and 7A and 7B. A fixed base 118 is installed outside the rotating body 26, and a heating means 146 is disposed above the fixed base 118. A vertical center shaft 154 is rotatably supported between a horizontal lower support plate 150 and an upper support plate 152 which are installed on the fixed base 118 and supported by upright columns 148. A servo motor 156 for driving the heating means is attached to the lower surface side of the lower support plate 150, and the drive of the servo motor 156 is transmitted to the intermediate shaft 164 via the pulley 158, the belt 160, and the pulley 162, and A gear 166 fixed to the intermediate shaft 164 meshes with a gear 168 provided at the lower end of the central shaft 154, and the rotation of the drive servo motor 156 is transmitted to the central shaft 154.

  Horizontal cross-shaped rotators 170A and 170B are attached to the upper and lower sides of the central shaft 154 and rotate integrally. The tip portions 170a of the upper and lower cross-shaped rotating bodies 170A and 170B are connected by a connecting pin 172 in the vertical direction. One end of a vertical plate member 174 is rotatably connected to each connecting pin 172, and a heater 176 is fixed to the other end (rotating end) of the vertical plate member 174. In this embodiment, heaters 176 are provided at four tip portions 170a of the cross-shaped rotators 170A and 170B. A cam follower 178 is attached to the lower end of the tip of the vertical plate member 174 (the end to which the heater 176 is fixed). A horizontal cam plate 180 is disposed below the cross-shaped rotating bodies 170A and 170B, and a cam groove 180a is formed on the upper surface of the cam plate 180. The cam follower 178 engages with the cam groove 180a. Yes. Due to the shape of the cam groove 180a, the heater 176 can move following a predetermined section to a portion where the rear end portion 2a and the front end portion 2b of the resin label 2 wound around the mandrel 28 are overlapped. The heater 176 of the heating means 146 is disposed at the same height as the mandrel 28 provided on the rotating body 26 and has a flat surface that comes into contact with the rear end portion 2 a of the resin label 2. In this embodiment, the resin label 2 wound around the mandrel 28 and bonded to both ends 2a and 2b and formed into a cylindrical shape is introduced around the container 18 and then introduced into the shrink tunnel 34 and heated. As a result, the resin label 2 contracts and adheres to the outer surface of the container 18. When the heating temperature in the shrink tunnel 34 is, for example, 90 ° C., the heater 176 is heated at a higher temperature (for example, 180 ° C.). Moreover, it is made to contact for a time shorter than the time when the resin labels 2 are welded.

  The operation of the resin label mounting apparatus according to the above configuration will be described. A long resin 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 members 6A and 6B via a plurality of rollers 4. It is cut into a predetermined length according to the size of the container 18. The cut label 2 is delivered to the label transfer drum 10 via the delivery drum 8 at the delivery position T. The transfer drum 10 is provided with a label holding portion 12 having a protrusion 12a for holding the rear end portion 2a of the resin label 2, and the front end portion 2b of the cut resin label 2 is first transferred to the transfer drum 10. After the intermediate portion following the front end portion 2b is also sucked and held, the rear end portion 2a of the resin label 2 is placed on the protruding portion 12a and the region other than the region where the hot melt is applied. The suction port 10e that is open is sucked and held.

  The resin label 2 held by the label holding part 12 of the transfer drum 10 is transferred to the position of the next glue applying means 14 by the rotation of the transfer drum 10. When the labeler is not in operation, the glue applying means 14 is moved backward by the air cylinder 64 so that the discharge port 66a of the hot melt coating head 66 does not contact the transfer drum 10 side. During operation, the glue applying means 14 is advanced toward the transfer drum 10 side so that the flat surface 66c on which the discharge port 66a of the hot melt coating head 66 is formed is replaced with the label holding portion of the resin label 2. The parts held by the twelve protrusions 12a are brought into contact with each other.

  Since the protrusion 12a holding the rear end portion 2a of the resin label 2 has an inclined surface 12ac on the front side in the rotation direction, the resin label 2 on the protrusion 12a of the transfer drum 10 that has rotated is hot. The contact starts smoothly without interference with the flat surface 66c of the melt coating head 66.

  When the flat surface 66 c of the hot melt coating head 66 starts to contact the resin label 2, glue is supplied from the glue supply means 68 to the glue application means 14 by a signal from the control device, and the hot melt coating head 66 discharge port. It is discharged from 66a and applied to the resin label 2. The timing for starting the application is determined by the position signal (encoder pulse signal) of the transfer drum 10, and the protrusion 12a holding the rear end portion 2a of the resin label 2 is at a predetermined position. When it is detected that it has arrived, the discharge of glue is started, and then measured by a timer, and after a predetermined time has elapsed, the discharge of glue is stopped. When the width applied to the resin label 2 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 adhesive remaining in the discharge port 66a with the resin label 2. Accordingly, the glue is not applied to the end 2aa of the rear end portion 2a of the resin label 2, and a region where no glue is attached remains (see FIG. 10A).

  The process in which the resin label 2 held by the label holding unit 12 of the transfer drum 10 is mounted on the container 18 through the mandrel 28 will be described with reference to the above drawings and FIG.

  In the rotating body 26 of the container transporting device 16, container tables 80 are arranged on the rotating disk 78 on the lower side at equal intervals in the circumferential direction, and the containers 18 are supplied from the inlet star wheel 24 to each container table 80. . The containers 18 are conveyed by a supply conveyor 20 and separated at a predetermined interval by an infeed screw 22 and then supplied onto a container table 80 of the container conveying device 16 via an inlet star wheel 24 (FIG. 8 ( a1)). The container base 80 supplied with the container 18 is rotated and conveyed by the rotation of the rotating body 26. When the container 18 is supplied onto the container table 80, the lifting rod 94 and the top locator 92 are lowered by the top locator lifting cam 104, and the head of the container 18 is pressed and stably held by the top locator 92 ( (See FIG. 8 (a2)). Thereafter, the container 18 placed on the container table 80 reaches a position S where the upper mandrel 28 delivers the resin label 2 from the transfer drum 10 (section A in FIGS. 1 and 8 is a container supply section). ). While the container 18 is supplied onto the container table 80, the picker 106 is raised and positioned around the mandrel 28. The picker 106 is open.

  When the container base 80 to which the container 18 is supplied reaches the position facing the transfer drum 10 (label transfer position S) by the rotation of the rotating body 26, the transfer drum is transferred to the mandrel 28 positioned above the container 18. The resin label 2 held by the ten label holding portions 12 is delivered. The container transport device 16 and the transfer drum 10 are operated synchronously. When the mandrel 28 of the container transport device 16 and the label holding unit 12 of the transfer drum 10 reach the label delivery position S, the container transport device 16 and the transfer drum 10 are first held by the label holding unit 12. The front end portion 2 b of the resin label 2 is in contact with the outer surface of the mandrel 28 that is rotationally moved (revolved) by the rotation of the rotating body 26. The mandrel 28 is rotated (autorotated) by driving the servo motor 90 and sucked from the suction hole on the outer surface. When the front end portion 2b of the resin label 2 comes into contact with the outer surface, the front end portion 2b is first adsorbed, The resin label 2 is wound around the mandrel 28 by the rotation of the transfer drum 10 and the revolution and rotation of the mandrel 28.

  The resin label 2 holding the front end portion 2b is wound up by the suction of the mandrel 28, and the transfer drum 10 releases the suction of the label holding portion 12. The resin label 2 is cut to a size longer than the circumference of the mandrel 28, and the rear end portion 2a is superimposed on the front end portion 2b adsorbed first. It is bonded onto the front end portion 2b by glue applied to the rear end portion 2a (see FIG. 8B). The section B in FIGS. 1 and 8 is a label winding section. Since the paste applied to the rear end portion 2a of the resin label 2 is not applied to the end 2aa as described above (see FIG. 10A), the end 2aa of the rear end portion 2a becomes the front end portion 2b. It is in a floating state without being bonded to (see FIG. 10B). When the resin label 2 is transferred from the transfer drum 10 to the mandrel 28, the picker 106 is moved below the mandrel 28 by the picker raising / lowering cam 120 as shown in the left side of FIG. 5 and FIG. 8B. Let go down.

  The mandrel 28 that holds the rear end portion 2a of the resin label 2 in a state of being superimposed on the front end portion 2b stops rotating (spinning) when the delivery of the resin label 2 is completed. At this time, the overlapped portion of the resin label 2 is stopped in a state where it is directed substantially outward in the radial direction of the rotating body 26. In this state, when the mandrel 28 holding the resin label 2 approaches the position of the heating means 146, the heater 176 is shown in FIG. 9A due to the shape of the cam groove 180a shown in FIG. In addition, the entire rear end portion 2a of the resin label 2 (the portion bonded to the front end portion 2b by glue and the end portion 2aa that is not bonded because the paste is not applied and floats up) is instantaneously contacted (see FIG. 8 (c)). The heater 176 is higher in temperature than the heating temperature of the shrink tunnel 34 performed in a later process (for example, when the heating temperature of the shrink tunnel 34 is 90 ° C., the heating temperature by the heater 176 is 180 ° C.), and is made of resin. The entire rear end portion 2a including the end 2aa to which the paste of the resin label 2 is not applied is cured by instantaneous contact (for example, 0.1 sec) for a time during which both ends of the label 2 are not welded (see FIG. 1 and section C of FIG. 8 is a section heated by the heater 176, and FIG. 9B shows a state after the end 2aa is cured).

  In a state where the rear end portion 2a of the resin label 2 wound around the mandrel 28 is overlapped on the front end portion 2b, the both end portions 2a and 2b are bonded to form a cylindrical label 2, and the rear end portion After the non-adhered end portion 2aa of 2a is cured, the picker 106 is raised to the height of the mandrel 28 with the opened state. Next, the picker 106 that has risen to the lower outer periphery of the mandrel 28 closes both the holding members 132 and 132 by the action of the picker opening / closing cam 142 (see FIG. 8D), and is wound around the mandrel 28. The resin label 2 is closely attached to the outer surface. In this state, the vacuum is applied to the suction hole 132a on the inner surface of the picker 106, the vacuum of the mandrel 28 is released, and the resin label 2 is sucked and held by the picker 106 (section D in FIGS. 1 and 8 is picker 106). This is the adsorption holding section of the resin label 2 by the above).

  Thereafter, the picker 106 holding the resin label 2 is lowered to the position of the lower container 18 by the picker raising / lowering cam 120. The cylindrical resin label 2 fitted around the mandrel 28 by the lowering of the picker 106 is extracted from the mandrel 28 and attached to the lower container 18 around the lower container 18 (see FIG. 8E). ). A section E in FIGS. 1 and 8 is a section in which the resin label 2 is fitted into the container 18.

  After the picker 106 removes the cylindrical resin label 2 wound around the mandrel 28 and attaches it to the outer peripheral surface of the lower container 18, the picker 106 is released from vacuum, and the picker opening / closing cam 142 Both holding members 132 are opened and raised to a height that does not interfere with the container 18 (see FIG. 8F). A section F in FIGS. 1 and 8 is an opening and ascending section of the picker 106.

  After the picker 106 is opened and raised to the periphery of the mandrel 28, the top locator 92 is raised (see FIG. 8 (g1)). Thereafter, the container 18 on which the resin label 2 is mounted is carried out onto the discharge conveyor 32 via the outlet star wheel 30 (see FIG. 8 (g2)). A section G in FIGS. 1 and 8 is a rise of the top locator 92 and a container discharge section.

  The containers 18 conveyed by the discharge conveyor 32 are introduced into a shrink tunnel 34 provided on the conveyor 32. In the shrink tunnel 34, the resin label 2 fitted in the container 18 is contracted by being heated at a temperature lower than the heater 176 (eg, 90 ° C.) for a predetermined time (eg, 3 seconds).

  In the above-described embodiment, the heater 176 is brought into contact with the rear end portion 2a including the end 2aa of the region where the paste of the resin label 2 is not applied for an extremely short time to cure the rear end portion 2a. However, the heater 176 may be contacted for a slightly longer time to weld the end 2aa to which the paste of the resin label 2 is not applied to the front end portion 2b. In this case, the heating temperature of the heater 176 may be equal to the heating temperature of the shrink tunnel 34. Further, the means for applying the paste is not limited to the hot melt coating head, and the resin label 2 is used by using another application means such as an application roller for bringing the roller attached to the entire circumference into contact with the resin label 2. Alternatively, the paste may be applied to the end portion of the rear end portion 2a, and the region to which the paste has been applied may be heat-cured. Furthermore, in the above-described embodiment, the paper is once wound around the mandrel 28, the rear end portion 2a is bonded to the front end portion 2b and formed into a cylindrical shape, and then removed from the mandrel 28 and attached to the container 18. The present invention can be applied even when the container is wound directly from the drum 10. In this embodiment, the heating means 146 is arranged at one place on the movement path of the mandrels 28, and the rear end portion 2a of the resin label 2 wound around each mandrel 28 is heated and cured. However, if a heater is provided for each mandrel, it is possible to support high-speed operation. In the above embodiment, the mandrel 28 is disposed above the container table 80, but is not limited to the upper part of the container table 80, and can be disposed below the container table 80.

DESCRIPTION OF SYMBOLS 2 Resin label 2a Rear end part of resin label 2b Front end part of resin label 10 Transfer drum 14 Glue application means 26 Rotating body 28 Mandrel 34 Heat contraction means (shrink tunnel)
80 Container base 90 Drive means 106 Insertion means (Picker)
146 Heating means

Claims (10)

A transfer drum for holding and transferring a resin label, a paste applying means for applying glue to a rear end portion of the resin label held by the transfer drum, and a plurality of rotating bodies, the rotating drum being provided with resin Corresponds to the mandrel that receives and winds up the label made of the resin, overlaps the rear end part of the resin label with the front end part, adheres it, forms it in a cylindrical shape and holds it by suction, and a drive means that rotates each mandrel. The container base for placing the container disposed and supplied, the fitting means for removing the resin label from the mandrel and fitting the container, and the resin label fitted to the container are heated to shrink A heating and shrinking means, and a heating means for contacting the rear end portion of the resin label formed into a cylindrical shape by the mandrel and heating the contacted portion,
The temperature of the heating means is set to be higher than the temperature of the heat shrinking means, and the rear end portion of the resin label is heated and cured by contacting for a time shorter than the time during which the resin label is welded. A resin label mounting device characterized by   A transfer drum for holding and transferring a resin label, a paste applying means for applying glue to a rear end portion of the resin label held by the transfer drum, and a plurality of rotating bodies, the rotating drum being provided with resin Corresponds to the mandrel that receives and rolls up the manufactured label, overlaps the rear end part of the resin label with the front end part, adheres it, forms it into a cylindrical shape and holds it by suction, and the drive means that rotates each mandrel. The container base for placing the container disposed and supplied, the fitting means for taking out the resin label from the mandrel and fitting it in the container, and the resin label fitted in the container are heated to shrink A heating shrinking means and a heating means for contacting the rear end portion of the resin label formed into a cylindrical shape by the mandrel and heating and welding the contacted portion are provided. Fat-made label mounting apparatus. A step of applying glue to the rear end portion of the resin label, a step of winding the resin label around the outer periphery of the mandrel, and forming the rear end portion of the resin label into a cylindrical shape overlapping the front end portion; and the resin label A step of heating the rear end portion, a step of removing the cylindrical resin label from the mandrel and fitting it in a container, and a step of heat shrinking the resin label,
The temperature at which the rear end portion of the resin label is heated is set higher than the temperature at which the resin label is heated and shrunk, and the resin label is heated for a time shorter than the time at which the resin label is welded. A method for mounting a resin label, comprising heating an end portion to cure.   A step of applying glue to the rear end portion of the resin label, a step of winding the resin label around the outer periphery of the mandrel, and forming the rear end portion of the resin label into a cylindrical shape overlapping the front end portion; and the resin label Mounting a resin label, comprising: a step of heat-welding the rear end portion of the sheet, a step of removing the cylindrical resin label from the mandrel and fitting it into a container, and a step of heat-shrinking the resin label Method. A transfer drum for holding and transferring a resin label, glue applying means for applying glue to the rear end portion of the resin label held on the transfer drum, a container table for placing the supplied container, Rotating means for rotating the container base and heating / shrinking means for heating and shrinking the resin label fitted in the container, the resin label is wound around the outer periphery of the container, and the rear end portion of the resin label is placed at the front end In the resin label mounting apparatus that heats and shrinks the resin label and attaches it to the container after overlapping and bonding to the part,
A heating means is provided for contacting the rear end portion of the resin label formed into a cylindrical shape and heating the contacted portion, and the temperature of the heating means is set to be higher than the temperature of the heating shrinkage means, and the resin A resin label mounting apparatus, wherein a rear end portion of a resin label is heated and cured by contact for a time shorter than a time during which the manufactured label is welded. A transfer drum for holding and transferring a resin label, glue applying means for applying glue to the rear end portion of the resin label held on the transfer drum, a container table for placing the supplied container, Rotating means for rotating the container base and heating / shrinking means for heating and shrinking the resin label fitted in the container, the resin label is wound around the outer periphery of the container, and the rear end portion of the resin label is placed at the front end In the resin label mounting apparatus that heats and shrinks the resin label and attaches it to the container after overlapping and bonding to the part,
A resin label mounting apparatus comprising a heating means for contacting a rear end portion of a resin label formed into a cylindrical shape and heat-welding the contacted portion. A step of applying glue to the rear end portion of the resin label, a step of winding the resin label around the outer periphery of the container, and molding the rear end portion into a cylindrical shape overlapping the front end portion; and the rear end of the resin label Having a step of heating the part and a step of heating and shrinking the resin label,
The temperature at which the rear end of the label is heated is set higher than the temperature at which the label is heated and shrunk, and the rear end of the resin label is heated by heating for a time shorter than the time at which the resin label is welded. A resin label mounting method characterized by curing the resin.   A step of applying glue to the rear end portion of the resin label, a step of winding the resin label around the outer periphery of the container, and molding the rear end portion into a cylindrical shape overlapping the front end portion; and the rear end of the resin label A resin label mounting method comprising a step of heat-welding portions and a step of heat-shrinking a resin label.   In the cylindrical resin label in which the glue applied to the rear end portion of the resin label is overlapped and adhered to the front end portion of the resin label, the rear end portion is heated to be cured and then cured. A container equipped with a resin label heat-shrinked at a temperature lower than the temperature.   In the cylindrical resin label in which the glue applied to the rear end portion of the resin label was overlapped and adhered to the front end portion of the resin label, the rear end portion was heated and welded, and then was heat-shrinked. A container with a plastic label.

Images