JP2013159375A - Label mounting system and label mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label mounting system in which in the process of heat-shrinkage of a shrink label, a temperature difference between the outer side surface and the inner side surface of the shrink label, is reduced, and generation of wrinkle on the shrink label mounted on a container is suppressed, even when the raw material of the container is weak to heat.SOLUTION: A label mounting system A in which a label with a heat shrinkable property is mounted on a container, includes a tool heating device 7 for heating a tool for placing the container during a period after taking out the container after the label is mounted until the container is mounted before the label is mounted thereon. Since the container is not directly heated, the container can be appropriately heated, even when the raw material of the container is weak to heat. In addition, since the container is heated in advance, the temperature difference between the outer side face and the inner side face of the label is reduced in the heat shrinking process of the label.

Description

  The present invention relates to a label mounting system and a label mounting method for mounting a heat-shrinkable label on a container or the like.

  Conventionally, a label mounting system for mounting a heat-shrinkable label on a container or the like has been developed. In the label mounting system, a label (hereinafter referred to as a “shrink label”) in which a heat-shrinkable film is formed into a cylindrical shape is fitted in a container, and the shrink label is heated to shrink by heat. Installing.

  The label mounting system includes a label fitting device that fits a shrink label on a container, a heating / shrinking device that heats and shrinks the shrink label, and the like, and a conveyance path for conveying the container between these devices. When transporting an empty container before filling the contents, a jig for placing the container is used to stably transport the container. For example, in the case of a tapered container having a small bottom, a jig on which the container is fitted is used.

Japanese Patent No. 4398030

  When heating a shrink label in a heat-shrink device, it is necessary to uniformly heat the entire shrink label. If the heating is biased, the shrinkage may be biased, and the shrink label attached to the container may be wrinkled. In addition, when the temperature of the container is low, the contraction state differs between the part that contacts the container earlier and the part that contacts the container late after the shrink label contracts. In other words, the portion that comes into contact with the container earlier is deprived of heat due to the heat being taken away by the container and the shrinkage is delayed, but the portion that is not in contact with the container is further shrunk. As a result, the contracted state is biased and wrinkles are generated. When there is a corner on the side surface of the container (for example, when the horizontal cross section is rectangular), the shrink label comes into contact with the side corner at an early stage, so that the shrinkage at the side corner is delayed. In particular, when the side corner portion is a curved surface, the contact area between the shrink label and the side corner portion is wide, so that the temperature tends to decrease and the shrinkage tends to be delayed. In addition, when the contact with the shrink label on the curved surface of the side corner portion becomes non-uniform, the contraction state is partially different. Therefore, wrinkles are likely to occur at the side corners. Even if the wrinkles generated on the shrink label are fine, the container does not meet the required quality. If the container is a heat-sensitive material, it may be deformed or deteriorated, so it cannot be shrunk so that it does not wrinkle by heating at a high temperature.

  The present invention has been conceived under the circumstances described above, and even if the material of the container is weak against heat, the shrinkage of the shrinkage of the shrink label is alleviated and the shrink mounted on the container An object of the present invention is to provide a label mounting system that can suppress wrinkling of a label.

  In order to solve the above problems, the present invention takes the following technical means.

  A label mounting system provided by the present invention is a label mounting system for mounting a heat-shrinkable label on a container, and a jig for fitting the container and a transport for transporting the jig A path, a container supply device that fits the container before the label is mounted on the jig, a label fitting device that fits the heat-shrinkable label on the container, and heat-shrinks the label Thus, the heat-shrink device for mounting the label on the container, the container take-out device for taking out the container after the label is attached, and the container before the label is attached after the container is attached after the label is attached. A heating device for heating the jig is provided between them. “Installation” refers to attaching a heat-shrinkable label to a container by covering the container and applying heat to cause heat-shrink.

  In a preferred embodiment of the present invention, the jig has a shape in contact with the inner surface in the vicinity of the opening of the container.

  In a preferred embodiment of the present invention, the side surface of the container has a curved corner.

  In preferable embodiment of this invention, the said heating apparatus is arrange | positioned on the conveyance path | route of the said jig | tool between the said container extraction apparatus and the said container supply apparatus.

  In a preferred embodiment of the present invention, the jig rotates while being heated.

  In a preferred embodiment of the present invention, the heating / shrinking device is not provided, and a container fitted with the label is carried into the heating device, and the label is heated and shrunk.

  In a preferred embodiment of the present invention, the heating device is disposed inside the jig.

  In a preferred embodiment of the present invention, the heating device includes a control device that adjusts a heating amount according to a deviation between a temperature of the jig and a target temperature.

  The label mounting method provided by the present invention is a label mounting method for mounting a heat-shrinkable label on a container, the first step of heating a jig for fitting the container, and the container A second step of fitting the label to the jig, a third step of fitting the label to the container, and heat-shrinking the label to attach the label to the container A fourth step and a fifth step of taking out the container after the label is mounted from the jig are provided.

  According to the present invention, since the jig for fitting the container is heated from the time when the container after label mounting is taken out until the container before label mounting is fitted, the jig after heating The container fitted in is heated by a jig. Since the container does not reach a temperature higher than that of the jig, the container can be appropriately heated even if the material of the container is weak against heat. Further, since the container is preheated, the heat of the portion that has come into contact with the container quickly is not lost to the container in the heat shrinking process of the label. Accordingly, the contraction of the portion is not delayed and the bias of the contracted state of the label is alleviated, so that it is possible to suppress wrinkling of the label attached to the container.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

It is a figure which shows schematic structure of the label mounting system which concerns on 1st Embodiment. It is a figure which shows schematic structure of the container conveyance jig which concerns on 1st Embodiment. It is a figure which shows schematic structure of the jig | tool heating apparatus which concerns on 1st Embodiment. It is a figure for demonstrating the other Example of the container conveyance jig which concerns on 1st Embodiment. It is a figure which shows schematic structure of the label mounting system which concerns on 2nd Embodiment. It is a figure for demonstrating the other Example of the heating apparatus which concerns on 2nd Embodiment. It is a figure which shows schematic structure of the label mounting system which concerns on 4th Embodiment.

  Embodiments of the present invention will be specifically described below with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a label mounting system according to the first embodiment. FIG. 2 is a diagram illustrating a schematic configuration of the container transport jig according to the first embodiment. FIG. 3 is a diagram illustrating a schematic configuration of the jig heating device according to the first embodiment.

  In the label mounting system A, a tapered container B having a large opening and a bottom having a small diameter (see FIG. 2B). In the figure, the opening is directed downward. ) Is a system for attaching shrink labels. The container B is made of, for example, a synthetic resin such as polypropylene, and the side corners are curved. The material and shape of the container B are not limited. For example, it may be made of paper, the horizontal section may be circular, or it may have corners that are not curved surfaces. As shown in FIG. 1, the label mounting system A includes a jig transport line 1, a container transport jig 2 (not shown in FIG. 1), a container supply device 3, a label fitting device 4, a heat shrinking device 5, and a container. A take-out device 6 and a jig heating device 7 are provided. FIG. 1 is a view of the label mounting system A as viewed from above.

  The jig conveyance line 1 conveys the container conveyance jig 2 between each apparatus, and is comprised with the conveyor and the screw. A conveyance path (shown by a thick line in FIG. 1) of the container conveyance jig 2 is configured by the jig conveyance line 1 and a rotary or a star wheel provided in each apparatus. The container transport jig 2 is transported on the transport path in the direction of the arrow shown in the figure.

  The container transport jig 2 is a jig for transporting the container B on the transport path, and circulates on the transport path. The container transport jig 2 is formed of a metal such as aluminum, for example, and includes a base portion 21, a rotating shaft 22, and a container fitting portion 23 as shown in FIG.

  The base portion 21 is a base of the container transport jig 2 and is transported on the transport path.

  The rotating shaft 22 is for rotating the container fitting portion 23 with respect to the base portion 21, and is rotatably attached to the base portion 21. The rotating shaft 22 rotates when its outer peripheral surface comes into contact with a guide 7 c (see FIG. 3B) provided inside the jig heating device 7, and the container fitting portion 23 fixed to the upper portion of the rotating shaft 22. Rotates together with the rotary shaft 22.

  The container fitting portion 23 is for fitting the container B, and is formed according to the shape of the container B (see FIG. 2B). The lower part of the outer surface of the container fitting portion 23 is formed so as to contact the inner surface of the container B in order to increase the efficiency of heat conduction to the container B. The upper portion of the outer surface of the container fitting portion 23 has a taper shape having a larger inclination than the inner surface of the container B (that is, the inner surface of the container B and the outer surface of the upper portion of the container fitting portion 23 to facilitate the extraction of the container B). The shape is such that a gap is generated between the two. The container fitting portion 23 has a hollow structure in which a hole 23a is provided on the upper surface and a hole (not shown) is provided on the lower surface. Heat is dissipated by air passing through these holes, so that the temperature of the container fitting portion 23 does not rise too much. In addition, when the mechanism which suppresses the overheating of the container fitting part 23 is provided separately (for example, when the temperature of the container fitting part 23 is feedback-controlled) etc., the inside is clogged without using a hollow structure. It is also good. The container fitting part 23 is detachably fixed to the rotating shaft 22 (see FIG. 2B), and the mold is changed depending on the shape of the container to be conveyed.

  The container transport jig 2 is not limited to the above configuration. For example, the material is not limited to metal, and the shape is not limited to that shown in FIG. The container fitting portion 23 cannot be attached and detached, and the entire container transport jig 2 may be replaced when changing the mold. The rotation mechanism is not limited to that described above, and a motor may be provided in the base portion 21 and the rotation shaft 22 may be rotated by the motor. Further, the container transport jig 2 itself may not be provided with a rotation mechanism, and the base portion 21 may be rotated on the transport path. As long as the whole container fitting part 23 can be heated substantially uniformly, the container conveyance jig 2 may not be rotated.

  The container supply device 3 supplies the container B to the container conveyance jig 2 carried in from the jig heating device 7 via the jig conveyance line 1. The container supply device 3 fits the container B taken out from the container stock part 32 into the container fitting part 23 of the container conveying jig 2 while the container conveying jig 2 is being conveyed through the rotary 31. The container carrying jig 2 fitted with the container B is carried out to the label fitting apparatus 4 via the jig carrying line 1. Since the method of taking out the container B from the container stock part 32 and the method of fitting the container B into the container fitting part 23 may be a conventional method, detailed description thereof is omitted. In addition, the container supply apparatus 3 is not restricted to this, What is necessary is just to supply the container B to the container conveyance jig 2 on a conveyance path | route appropriately. For example, it may not be provided with the rotary 31, or the container B may be supplied to the container transport jig 2 manually. Note that the container B is not limited to being made of synthetic resin, and may be, for example, a paper or thin glass container.

  The label fitting device 4 is for fitting a shrink label on the container B. The label fitting device 4 carries in the container conveying jig 2 fitted with the container B from the container supply device 3 through the jig conveying line 1. The label fitting device 4 fits the shrink label supplied from the label supply unit 42 to the container B while the container transport jig 2 is transported through the rotary 41. The shrink label is formed by forming a heat-shrinkable film such as a polyester-based resin or a polystyrene-based resin into a cylindrical shape. After the shrink label is fitted on the container B, the container transport jig 2 is transported to the heat shrinking device 5 via the jig transport line 1. Since the supply method of the shrink label by the label supply unit 42 and the method of fitting the shrink label into the container B may be performed by a conventional method, detailed description thereof is omitted. In addition, the label covering apparatus 4 is not restricted to this, What is necessary is just to attach a shrink label appropriately to the container B on a conveyance path | route. For example, the rotary 41 may not be provided, or a shrink label may be fitted onto the container B by hand.

  The heating / shrinking device 5 heats and shrinks the shrink label fitted to the container B, and attaches the shrink label to the container B. The heating / shrinking device 5 includes a heating tunnel having a plurality of ejection holes for ejecting high-temperature gas (for example, air heated by a heater), and the container conveying jig 2 is conveyed in the heating tunnel by a conveyor. . The conveyor may be integrated with the jig transport line 1. The shrink label is heated and contracted while the container transport jig 2 carried in from the label fitting device 4 through the jig transport line 1 passes through the heating tunnel, and is attached to the container B. Further, the heating / shrinking device 5 rotates the container B in the same manner as the jig heating device 7 described later in order to apply a gas of high temperature (for example, 90 to 250 ° C.) evenly to the entire shrink label. Yes. Thereby, a shrink label can be shrunk uniformly. The method for rotating the container B will be described in the description of the jig heating device 7. After the shrink label is mounted on the container B, the container transport jig 2 is transported to the container take-out device 6 via the jig transport line 1. The kind and temperature of the gas ejected from the ejection hole, the length of the heating tunnel, and the like are appropriately designed according to the material and shape of the container B, the material and thickness of the shrink label, and the like. Since a conventional heating tunnel may be used, detailed description of a specific structure and the like is omitted. The heating / shrinking device 5 is not limited to this, and may be any device that appropriately heats and shrinks the shrink label on the conveyance path. For example, instead of heating by convection of a high-temperature gas, heating may be performed by radiant heat of a heater.

  The container take-out device 6 takes out the container B equipped with a shrink label from the container carrying jig 2 carried in from the heating / shrinking device 5 through the jig carrying line 1. The container take-out device 6 takes out the container B from the container carrying jig 2 by sucking the bottom outer surface of the container B and lifting it upward while the container carrying jig 2 is being carried through the rotary 61. The taken out container B is conveyed to the container carry-out unit 62 and accumulated. The container carrying jig 2 after the container B is taken out is carried out to the jig heating device 7 through the jig carrying line 1. Since the method for taking out the container B from the container carrying jig 2 and the method for carrying the taken out container B may be a conventional method, detailed description thereof is omitted. Note that the container take-out device 6 is not limited to this, and may be any apparatus that appropriately takes out the container B from the container carrying jig 2 on the carrying path. For example, the container B may be taken out by a method other than suction, or the rotary 61 may not be provided. Moreover, you may make it take out the container B from the container conveyance jig | tool 2 manually.

  The jig heating device 7 heats the container fitting portion 23 of the container transport jig 2. As shown in FIG. 3A, the jig heating device 7 includes a heating tunnel having a plurality of ejection holes 7a for ejecting a high-temperature gas (for example, air heated by a heater). The heating tunnel has the same structure as that of the heating tunnel of the heat shrinking device 5. The container transport jig 2 is transported in the heating tunnel by the conveyor 7b. The conveyor 7b may be integrated with the jig conveyance line 1. The ejection hole 7a is provided at a height at which the container fitting portion 23 is positioned when the container transport jig 2 passes through the heating tunnel. In addition, the ejection hole 7a is not limited to the round hole type shown in FIG. 3, A rectangular shape and another shape may be sufficient. Instead of providing the plurality of ejection holes 7 a, a rectangular hole that is long in the traveling direction of the container transport jig 2 or a hole corresponding to the shape of the container fitting portion 23 may be provided. Further, a nozzle may be provided in the ejection hole 7 a so that high-temperature gas hits the container fitting portion 23. Moreover, you may make it apply more hot gas to the said part so that the lower part (part which the opening part vicinity of the container B touches) the container fitting part 23 may be heated especially.

  The jig heating device 7 heats the container fitting portion 23 of the container conveyance jig 2 while the container conveyance jig 2 carried in from the container extraction device 6 through the jig conveyance line 1 passes through the heating tunnel. To do. In addition, the container fitting portion 23 of the container conveying jig 2 is rotated in order to uniformly apply a high-temperature gas to each side surface of the container fitting portion 23 of the container conveying jig 2. As shown in FIG. 3B, a guide 7c is provided in the heating tunnel, and the container transport jig 2 moves in the traveling direction (the direction of the solid arrow in the figure) while contacting the outer peripheral surface of the rotary shaft 22 with the guide 7c. ), The rotating shaft 22 rotates, and the container fitting portion 23 fixed to the rotating shaft 22 rotates in the direction of the broken line arrow in the drawing. Thereby, each side surface of the container fitting part 23 of the container conveyance jig 2 can be heated uniformly. The container conveyance jig 2 in which the container fitting portion 23 is heated is carried out to the container supply device 3 via the jig conveyance line 1.

  The type and temperature of the gas ejected from the ejection hole 7a, the length of the heating tunnel, and the like are covered by the material and size of the container fitting portion 23 of the container transport jig 2 and in subsequent steps. It is designed appropriately depending on the material and shape of the container B. That is, if the temperature of the container fitting portion 23 is too high when the container B is fitted in the container supply device 3, the container B may be deformed or deteriorated. On the other hand, it is necessary to raise the temperature of the container B before it is carried into the heating / shrinking device 5. Therefore, the temperature of the gas to be ejected and the length of the heating tunnel are adjusted so that the temperature of the container fitting portion 23 becomes an appropriate temperature. In the present embodiment, when the shrink label is fitted to the container B by the label fitting device 4, the surface temperature of the container B is a temperature before the shrinkage of the shrink label begins (for example, the shrinkage start temperature of the shrink label is 60 ° C. In the case of 40 to 55 ° C.).

  Note that the jig heating device 7 is not limited thereto, and may be any apparatus that appropriately heats the container fitting portion 23 of the container conveyance jig 2 on the conveyance path. For example, instead of heating by convection of a high-temperature gas, heating may be performed by radiant heat of a heater.

  Further, the jig heating device 7 may include a control device for controlling the temperature of the container fitting portion 23 to a predetermined target temperature. For example, a temperature measuring device for measuring the temperature of the container fitting portion 23 of the container conveying jig 2 carried out from the jig heating device 7 is provided at the carry-out port of the jig heating device 7, and the control device is the temperature measuring device. The feedback control may be performed by adjusting the temperature of the gas to be ejected or the air volume in accordance with the deviation between the measured temperature measured by the above and the target temperature. The temperature measuring device provided at the carry-out port of the jig heating device 7 is not limited to the case where the temperature of the container fitting portion 23 is measured from the outside, and a temperature measuring device provided inside each container fitting portion 23 is provided. The measured temperature may be transmitted to the control device at the timing when the container transport jig 2 exits the jig heating device 7. Moreover, you may make it measure not the temperature of the container fitting part 23 but the temperature of the container B fitted by the container fitting part 23. FIG. Moreover, the timing which measures temperature is not limited to the timing which was carried out from the jig | tool heating apparatus 7, For example, just before supplying the container B to the container conveyance jig 2, or just before fitting a shrink label on the container B It is good.

  According to this embodiment, the container B is fitted to the container fitting portion 23 heated by the jig heating device 7, the shrink label is fitted to the container B, and the shrink label is heated by the heat shrinking device 5. The Since the container B is heated by the heated container fitting part 23, the heat of the part which contacted the container B early is not deprived by the container B in the shrinkage | contraction process of a shrink label. Accordingly, the shrinkage of the portion is not delayed and the shrinkage of the shrinkage state of the shrink label is alleviated, so that the shrinkage of the shrink label attached to the container B can be suppressed. Further, since the container B is not directly heated but heated by the heated container fitting portion 23, even if the material of the container B is weak to heat, it is appropriately heated without being deformed or altered. Can be warmed. Moreover, it can heat stably by the heat transfer from the container fitting part 23. FIG.

  Moreover, since the vicinity of the opening part of the inner surface of the container B is in contact with the lower part of the outer surface of the container fitting part 23, the opening part side of the container B is reliably heated. Therefore, the shrink label can be reliably contracted and adhered on the opening side of the container B. In particular, when a heat-sensitive adhesive (for example, a delayed tack type heat-sensitive adhesive, a hot-melt type adhesive, etc.) is applied to the inner surface of the shrink label at a position in contact with the container B opening side, the heat-sensitive adhesive can be easily applied. It can be activated to improve adhesion.

  In the label mounting system A, the arrangement positions of the devices 3 to 7 and the shape of the jig transport line 1 are not limited to those shown in FIG. If the order of the devices 3 to 7 on the transport path is not changed, the arrangement may be appropriately designed, and the jig transport line 1 may be provided according to the arrangement of the devices 3 to 7.

  Moreover, the shape of the container fitting part 23 is not limited to what was mentioned above. Since the generation | occurrence | production of a wrinkle can be suppressed if the opening part side to which a shrink label is closely_contact | adhered among the fitted containers B is heated, it is good also as a shape shown to Fig.4 (a), for example. The container fitting portion 23 ′ shown in FIG. 4A is only the lower half of the container fitting portion 23. In particular, when the shrink label is attached only to the portion near the opening of the container B, only the portion near the opening needs to be heated, so the container fitting portion 23 'may be used. In this case, the material cost of the container transport jig 2 can be suppressed.

  Further, when it is desired to particularly heat the vicinity of the corner curved surface of the side surface of the container B, the shape shown in FIG. The container fitting portion 23 ″ shown in FIG. 4B is only in the vicinity of the curved surface of the four corners of the side surface of the container fitting portion 23. In the case of the shape shown in FIG. Among the side surfaces of B, the vicinity of the corner curved surface where wrinkles are likely to occur can be particularly heated, so that the occurrence of wrinkles on the shrink label of this portion can be suppressed. It is possible to suppress the material cost of the tool 2. In order to heat the entire peripheral surface of the container B more evenly, it is better to leave the entire side surface of the container fitting portion 23.

  Further, a heating device is arranged between the container supply device 3 and the label fitting device 4 so that the outer surface of the container B is auxiliaryly heated before the shrink label is fitted on the container B. Good. In this case, it is necessary to limit the degree of heating so that the container B does not deform or deteriorate.

  In the first embodiment, the case where the heating / shrinking device 5 and the jig heating device 7 are separately arranged has been described. However, the heating / shrinking device 5 and the jig heating device 7 may be arranged as one device. . A case where the heat shrinking device 5 and the jig heating device 7 are used as one device will be described below as a second embodiment.

  FIG. 5 is a diagram showing a schematic configuration of a label mounting system according to the second embodiment. In the figure, the same or similar elements as those in the label mounting system A shown in FIG.

  The label mounting system A ′ shown in FIG. 5 is different from the label mounting system A according to the first embodiment in that a heating device 7 ′ is provided instead of the heating / shrinking device 5 and the jig heating device 7.

  In the label mounting system A ′, the jig transport line 1 is configured such that the container transport jig 2 unloaded from the label fitting device 4 passes through the heating device 7 ′ and is loaded into the container unloader 6. The unloaded container conveying jig 2 is provided so as to pass through the heating device 7 ′ and be carried into the container supply device 3.

  The heating device 7 ′ is provided with the functions of the heating and shrinking device 5 and the jig heating device 7, and includes a heating tunnel having a plurality of ejection holes for ejecting high-temperature gas (for example, air heated by a heater). I have. The heating device 7 'includes two conveyors 7b and 7d, and the conveyors 7b and 7d are arranged so as to be substantially parallel to the horizontal direction. The conveyor 7b conveys the container conveyance jig 2 carried in from the container take-out device 6 from the left to the right in the drawing in the heating tunnel, and carries it out to the container supply device 3. While passing through the heating tunnel, the container fitting portion 23 of the container transport jig 2 is heated. The conveyor 7d conveys the container conveying jig 2 carried in from the label fitting device 4 from the right to the left in the drawing in the heating tunnel, and carries it out to the container unloading device 6. While passing through the heating tunnel, the shrink label fitted to the container B is heated. The conveyors 7b and 7d may be integrated with the jig conveyance line 1, respectively.

  Also in this embodiment, the container fitting part 23 before the container B is fitted is heated. Therefore, the same effect as that of the first embodiment can be obtained. Moreover, in 2nd Embodiment, since heating apparatus 7 'provided with the function of the heat contraction apparatus 5 and the jig heating apparatus 7 is used, the space which arrange | positions a label mounting system is made smaller than the case of 1st Embodiment. be able to.

  In the second embodiment, the case where the conveyors 7b and 7d are arranged so as to be substantially parallel to the horizontal direction in the heating device 7 'has been described. However, the present invention is not limited to this.

  FIG. 6 is a diagram for explaining another example of the heating device 7 ′ according to the second embodiment. In the figure, the same or similar elements as those in the jig heating device 7 shown in FIG.

  The heating device 7 ″ shown in FIG. 6 is different from the heating device 7 ′ in that the conveyors 7b and 7d are arranged so as to be substantially parallel to the vertical direction. As shown in FIG. The conveyor 7d is arranged below the conveyor 7b in the heating tunnel. Moreover, the several ejection hole 7a is provided in the height in which the container fitting part 23 of the container conveyance jig 2 which the conveyor 7d conveys is located. Thereby, a high-temperature gas can be directly applied to the shrink label fitted to the container B. Moreover, the container fitting part 23 of the container conveyance jig 2 which the conveyor 7b conveys is heated by the high temperature gas which ejects from the several ejection hole 7a, and raises the inside of a heating tunnel. It should be noted that a plurality of ejection holes 7a are also provided at the height at which the container fitting portion 23 of the container conveying jig 2 conveyed by the conveyor 7b is provided so that a high-temperature gas is directly applied to the container fitting portion 23. Good.

  In the first or second embodiment, the case where the jig heating device 7 (heating devices 7 ′ and 7 ″) is arranged on the transport path between the container take-out device 6 and the container supply device 3 has been described. However, it is only necessary to heat the container conveying jig 2 from the time when the container B after the label is mounted to the time when the container B before the label is supplied, so that the jig heating device is used as the container conveying jig 2. This case will be described below as a third embodiment.

  In 3rd Embodiment, the jig heating apparatus 8 (not shown) provided with a heater, a switch, and a power supply is arrange | positioned inside the container fitting part 23 of each container conveyance jig 2. As shown in FIG. After the container B after the label is mounted is taken out (for example, when it is carried out from the container take-out device 6), the switch is turned on to start heating by the heater. And before supplying the container B before label mounting (for example, the timing of carrying in the container supply apparatus 3), the switch is turned off to stop the heating by the heater. Note that a heating method, a power supply method, and a switch control method may be appropriately designed.

  Also in this embodiment, the container fitting part 23 before the container B is fitted is heated. Therefore, the same effect as that of the first embodiment can be obtained. Further, in the third embodiment, since it is not necessary to arrange the jig heating device 7 on the conveyance path, the degree of freedom increases in the arrangement of each device in the label mounting system, and the space for arranging the label mounting system is increased. It can be made smaller than in the case of the first embodiment.

  In the said 1st thru | or 3rd embodiment, although the case where the conveyance path | route of the container conveyance jig | tool 2 was arrange | positioned on a substantially horizontal surface was demonstrated, it is not restricted to this. A case where the conveyance path is arranged on a substantially vertical plane will be described below as a fourth embodiment.

  FIG. 7 is a diagram showing a schematic configuration of the label mounting system according to the fourth embodiment, and is a view of the label mounting system as viewed from the side. In the figure, the same or similar elements as those in the label mounting system A shown in FIG.

  As shown in FIG. 7, the label mounting system A ″ includes a pair of chains that circulate and rotate on a substantially vertical plane, and a transport apparatus 1 ′ that includes a plurality of stays installed on the chain. A container transport jig 2 ′ is attached to the stays at predetermined intervals.Each container transport jig 2 ′ is to be fitted with the container B and formed according to the shape of the container B. The conveyance device 1 ′ circulates each container conveyance jig 2 ′ in the order of the container supply device 3, the label fitting device 4, the heat shrinking device 5, the container extraction device 6, and the jig heating device 7. In other words, the transport path of the container transport jig 2 ′ is disposed on a substantially vertical plane.

  The container supply device 3 fits the container B on the container transport jig 2 ', the label fitting device 4 puts the shrink label C on the container B, and the heat shrink device 5 heats and shrinks the shrink label to bring the container B into contact. Attach to. The container take-out device 6 takes out the container B to which the shrink label is attached, and the jig heating device 7 heats the container transport jig 2 '.

  Also in this embodiment, the container transport jig 2 ′ before the container B is fitted is heated. Therefore, the same effect as that of the first embodiment can be obtained.

  The label mounting system and the label mounting method according to the present invention are not limited to the above-described embodiments. The specific configuration of each part of the label mounting system and the label mounting method according to the present invention can be varied in design in various ways.

A, A ', A "Label mounting system 1 Jig transfer line 1' Transfer device 2, 2 'Container transfer jig (jig)
DESCRIPTION OF SYMBOLS 21 Base part 22 Rotating shaft 23 Container fitting part 3 Container supply apparatus 31 Rotary 32 Container stock part 4 Label fitting apparatus 41 Rotary 42 Label supply part 5 Heating shrinkage apparatus 6 Container taking-out apparatus 61 Rotary 62 Container carrying-out part 7,8 Tool heating device (heating device)
7a Ejection hole 7b, 7d Conveyor 7c Guide 7 ', 7 "Heating device B Container

Claims (4)

A label mounting system for mounting a heat-shrinkable label on a container,
A jig for fitting the container;
A transport path for transporting the jig;
A container supply device for fitting the container before the label is mounted on the jig;
A label fitting device for fitting the heat-shrinkable label to the container;
A heat-shrink device for attaching the label to the container by applying heat to shrink the label;
A container take-out device for taking out the container after the label is attached;
A heating device that heats the jig between taking out the container after label mounting and fitting the container before label mounting;
A label mounting system characterized by comprising:   The label mounting system according to claim 1, wherein the jig has a shape in contact with an inner surface in the vicinity of the opening of the container.   The label mounting system according to claim 1, wherein the side surface of the container has a curved corner. A label mounting method for mounting a heat-shrinkable label on a container,
A first step of heating a jig for fitting the container;
A second step of fitting the container onto the jig;
A third step of fitting the label onto the container;
A fourth step of attaching the label to the container by applying heat to thermally shrink the label;
A fifth step of removing the container after the label is mounted from the jig;
A label mounting method characterized by comprising:

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