JP2010036928A - Label affixing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label affixing apparatus preventing any trace of suction holes by a suction drum from being formed when a label is affixed to a container. <P>SOLUTION: The label affixing apparatus sucks the label L with a heat-sensitive adhesive 11 coated on one side thereof, on the surface of a suction drum 3 having a large number of suction holes 302, heats the label by the suction drum to activate the heat-sensitive adhesive, and transfers the label to a predetermined affixing position at a constant speed v<SB>1</SB>. The container B is transferred to the affixing position at the timing when the label reaches the affixing position, and the label is affixed to the side surface of the container by pressing the side surface of the container against the label in a rotating manner. The affixing apparatus pulls the label by the rotation of the container after a fore end of the label is stuck on the container by rotating the container at the peripheral velocity v<SB>2</SB>higher than the peripheral velocity of the suction drum during the affixing operation, and allows the label to slide on a suction surface of the suction drum at the relative speed. Thus, the positions of the suction holes are shifted, and any projecting part 12 due to the suction of the suction holes is not formed when the label is affixed to the container. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a label sticking device for supplying and sticking a member to be stuck (for example, a label) to the surface of a container such as a PET bottle.

  2. Description of the Related Art Conventionally, there has been proposed a label sticking apparatus that supplies a label to a container such as a PET bottle and sticks the label to the surface of the container with a heat-sensitive adhesive (for example, see Patent Document 1).

  FIG. 10 is a diagram illustrating a configuration of a conventional label sticking apparatus.

  In this label sticking apparatus 100, a long label substrate S (a resin material having a heat-sensitive adhesive layer laminated on one side) is supplied from a supply reel 101 to a cut unit 104 via a plurality of feed rollers 102 and an air dancer 103. Supplied and cut into labels of a predetermined size. The cut-out label is sucked by the suction drum 105 and attached to the container B at a predetermined sticking position (position where the side surface of the container B is pressed against the peripheral surface of the suction drum 105. In FIG. To the position where the peripheral surface of the belt conveyor device 110 faces. The adsorption drum 105 is heated by the heating device 106. When the label is adsorbed from the cut unit 104 to the adsorption drum 105, the heat-sensitive adhesive of the label is activated, and in that state, the label is transferred to the sticking position. The

  On the other hand, a large number of containers B are sent to the star wheel 108 one by one by the screw shaft 107 and are transferred to the sticking position by the star wheel 108 and the guide plate 109. At this time, the container B is conveyed in the direction opposite to the rotation direction of the suction drum 105 while being pressed against the suction drum 105 by the belt 111 of the belt conveyor device 110.

  Therefore, the label adsorbed on the adsorbing drum 105 is adhered to the side surface of the container B with the activated heat-sensitive adhesive when the leading end reaches the adsorbing position, and then the heat-sensitive adhesion is performed by rotating the container B to the rear end. Adhering sequentially with the agent. The container B to which the label is attached is transferred to the next process position by the discharge device 112.

Japanese Patent No. 3036724

  By the way, a suction surface is provided at a predetermined position on the outer peripheral surface of the suction drum 105, and a plurality of suction holes for sucking labels are arranged and drilled on the suction surface. The plurality of suction holes are sucked with a constant suction force by a suction device (not shown), and the label cut out by the cut unit 104 is received by the suction surface of the suction drum 105 and sucked by the plurality of suction holes. It is transferred to the sticking position in the state.

  FIG. 11 is a cross-sectional view showing a state in which the label 113 is attracted to the suction surface 105A of the suction drum 105. In FIG. 11, for the sake of convenience of explanation, the suction surface 105A of the suction drum 105 is shown substantially horizontally.

  As shown in the figure, since the suction hole 105B formed in the suction surface 105A is sucked upward, the portion facing the suction hole 105B on the label 113 sucked by the suction surface 105A is in the suction hole 105B. If the surface (the lower surface in FIG. 11) provided with the heat-sensitive adhesive of the depression 113 and the label 113 is the back surface, the label 113 is arranged in a grid corresponding to the suction holes 105B arranged in a grid on the surface. The plurality of convex portions 113A are transferred to the suction position in a state where they are formed.

  On the other hand, in the conventional label apparatus 100, as shown in FIG. 10, the container B is linearly transferred from the right side below the suction drum 105 that rotates counterclockwise, and the container B is sucked at the suction position. Since the label is adhered to the container B by being brought into pressure contact with the container B, the peripheral speed of the container B (speed at which the side surface rotates) is the peripheral speed of the suction drum 105 (speed at which the peripheral surface rotates). ).

  As a result, in the conventional label apparatus 100, as shown in FIG. 12, the container B is pressed against the suction drum 105 that rotates counterclockwise at the peripheral speed v at the sticking position. Since it is configured to rotate clockwise with v, as shown in FIGS. 4A to 4C, equivalently, on the label 113 sucked on the suction surface of the stationary suction drum 105. The container B is rotated so that the label 113 is wound around the container B and is attached. In FIG. 12, for convenience of explanation, the peripheral surface of the suction drum 105 is shown substantially horizontally.

  In the conventional label apparatus 100, as described above, the label 113 is adhered to the container B so as to roll the container B on the back surface of the label 113 adsorbed to the adsorption surface of the adsorption drum 105. 12 (c), the label 113 on which a plurality of convex portions 113A are formed is stuck so as to be transferred to the side surface of the container B, and thereby the convex portions are formed on the label 113 stuck to the container B. There was a problem that the mark by 113A remained and the appearance of the container B was not good.

  In the conventional label device 100, since the belt 111 moves the container B toward the discharge device 112 while pressing the container B against the suction drum 105, the convex portion 113A of the label 113 adhered to the container B during the transfer is provided. Although pressed by the belt 111, the heat-sensitive adhesive of the convex portion 113A is in an inactive state after being stuck to the container B. Therefore, even if pressed by the belt 111, the convex portion 113A is adhered to the container B. Therefore, the convex 113A cannot be flattened.

  The present invention has been conceived under the circumstances described above, and provides a label sticking device capable of sticking a label adsorbed on a suction drum to a container so that suction marks are not formed. The task is to do.

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

  The label sticking apparatus according to the present invention has a suction surface provided with a plurality of suction holes, and holds the label by sucking the surface of the label coated with a heat-sensitive adhesive on the back surface with the plurality of suction holes. And a label holding means for activating the heat-sensitive adhesive by heating the label, a label transfer means for transferring the label along the path by moving the label holding means along a predetermined path, and a container A container holding means for rotatably holding the container, and the container holding means is moved along a path different from the label holding means, and the side surface of the container is held by the label holding means at a predetermined sticking position on the path. A container transfer means for press-contacting to the back surface of the label, and a label adhering device for winding the label for transferring the path around the side of the container at the adhering position and adhering with the heat-sensitive adhesive The container rotating means for rotating the container so that the movement of the side surface is in the same direction as the movement of the label when the side surface of the container is pressed against the label, and the rotation speed of the container, And a container rotation speed control means for controlling the movement speed of the side surface of the container to a predetermined rotation speed higher than the movement speed of the label.

  In the label sticking apparatus, the predetermined rotational speed controlled by the container rotational speed control means is from the sticking of the end of the label to the side of the container at the sticking position until the trailing edge is stuck. During this period, the label is pulled by the rotation of the container, and the rotation speed may be such that the label slides on the suction surface of the label holding means beyond the diameter of the suction hole.

  3. The label sticking apparatus according to claim 1, wherein the label holding unit is rotatably supported, and is provided in a cylindrical drum having the suction surface formed on a part of an outer peripheral surface thereof. And a drum driving unit configured to rotate the drum at a predetermined rotational speed. The suction unit sucks a plurality of suction holes formed in the suction surface, and the heating unit heats the drum. The container transporting means is rotatably supported, and a rotation base provided with a support portion for rotatably supporting the container at the tip, and a rotation for rotating the rotation base in a direction opposite to the drum. The container transfer means is configured to drive the drum with the sticking position as a position where the outer peripheral surface of the drum intersects a line connecting the rotation center of the drum and the rotation center of the turntable. At the timing when the label adsorbed on the adsorption surface of the drum by the step is transferred to the adhering position, the container supported at the tip of the turntable is transferred to the adhering position, and the side surface of the container is used as the label. It is good to press-contact (Claim 3).

  In addition, in the label sticking apparatus according to claim 3, the container rotation control means is configured such that the container supported at the tip of the turntable is transferred to the sticking position, and the side surface of the container is pressed against the label. The rotation speed of the container may be set to the predetermined rotation speed until now.

  4. The label sticking apparatus according to claim 3, wherein the container rotation control means moves the container from the predetermined rotational speed until the container supported at the tip of the turntable is transferred to the sticking position. It is preferable that the rotation speed of the container is increased to the predetermined rotation speed when the side surface of the container is pressed against the label.

  According to the present invention, the label is sucked by the label holding means, and the label holding means is moved to the adhering position by a predetermined path, while the container is held by the container holding means, and the container holding means is the label holding means. Move to a sticking position by a different route, wind the container while pressing the side of the container against the label at the sticking position, and when sticking with a heat-sensitive adhesive, the container is moved in the direction of the side of the label. Since the rotation speed is the same as the movement direction and the movement speed of the side surface is higher than the movement speed of the label, the label is transferred to the container when the tip of the label is adhered to the side surface of the container with the heat-sensitive adhesive. And is slid on the suction surface of the label holding means. As a result, the position on the suction surface of the convex part generated by suction of the suction hole is shifted, and the heat-sensitive adhesive in the convex part is activated, so in the subsequent sticking operation of the label to the container, the convex part is caused by pressure contact of the container. The label is flattened and adhered to the side surface of the container with a heat-sensitive adhesive, and a suction mark is not generated on 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.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic configuration diagram showing a label sticking apparatus according to the present invention. In addition, the arrow in a figure has shown the rotation direction of the rotation member. FIG. 2 is a block diagram showing an electrical configuration of the label sticking apparatus. In FIG. 2, the same members as those shown in FIG.

  The label sticking apparatus 1 sticks a label representing the name of a beverage, a detergent, or the like injected into the container such as a PET bottle. While this label sticking apparatus 1 moves a label along a predetermined transfer path, it transfers the container to a predetermined sticking position on the label transfer path, presses the container against the label at the predetermined position, and The side of the container is rotated in the same direction as the label transfer direction so that the label is stuck around the side of the container.

  As shown in FIG. 1, the label sticking apparatus 1 feeds out a long label base material S and cuts out the label base material S to generate a substantially rectangular label L (see FIG. 3). The device 2 and the label L generated by the label generating device 2 are sucked to a predetermined sticking position P (the peripheral surface of the suction drum 3 is the rotation center O ′ of the suction drum 3 and the rotation center of the turntable 521a described later) The adsorbing drum 3 to be transferred to a position near the line connecting O), the heating device 4 for heating the adsorbing drum 3, and the container B supplied from the outside are transferred to the adhering position P, and the adhering After the label L is stuck at the position P, the container transfer device 5 for carrying it out is generally constituted.

  In the label sticking apparatus 1, the label L and the container B are respectively transferred to the sticking position P and the label L is stuck to the container B. However, in the label sticking apparatus 1 according to the present embodiment, the label is attached. When L is attached to the container B, the container B is wound up from the suction drum 3 by making the peripheral speed of the container B (the speed at which the side surface moves) faster than the peripheral speed of the suction drum 3 (the speed at which the outer peripheral surface moves). In this way, the label L adhered to the side surface of the container B is characterized in that it is configured so as not to generate suction marks (marks generated by suction by a large number of suction holes of the suction drum 3). Details will be described below.

  The label base material S used in the present embodiment is a transparent or translucent long base material in which a heat-sensitive adhesive is applied to one surface of a polyester film, for example. This polyester film is formed from, for example, polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate or the like, which has a characteristic that does not shrink due to a heating temperature such as retort sterilization. The heat-sensitive adhesive is a hot-melt adhesive that is activated by heating at a predetermined temperature of, for example, 100 ° C. or less and exhibits adhesive properties. For example, an ethylene acrylate copolymer and an ethylene methacrylate copolymer It is formed by an ethylene-based copolymer such as In addition, the structure of the label base material S is not limited to the said polyester film and the said heat sensitive adhesive.

  As shown in FIG. 3, the label generating apparatus 2 feeds the label base material S from a supply reel 201 around which a long label base material S is wound in advance, and has a predetermined shape (for example, a rectangular shape). Etc.) to generate a label L.

  The label generating apparatus 2 includes the above-described supply reel 201, a plurality of guide rollers 202 for transferring the label base material S, and a label base material feed for feeding out the label base material S wound around the supply reel 201. A part 203, a label cut part 204 for cutting out the label base material S into a label L of a predetermined size (size attached to the container B), and a label L generated by cutting out the label base material S A label delivery drum 205 for transferring to the drum 3 and a remaining take-up reel 206 for taking up an unnecessary portion left after the label base material S is cut out by the label cut unit 204 are roughly constituted.

  The label base material feed unit 203 includes a label feed roller 203a, an auxiliary roller 203b, a label feed motor 701 (see FIG. 2) that rotationally drives the label feed roller 203a, and a servo amplifier 702 that controls the label feed motor 701 (see FIG. 2). 2). As shown in FIG. 2, the servo amplifier 702 is connected to a control device 6 that comprehensively controls the entire apparatus, and the label feed motor 701 is driven to rotate by the control device 6 via the servo amplifier 702. .

  Here, the electrical configuration of FIG. 2 will be briefly described. The control device 6 has a microcomputer (not shown), and based on an operation program stored in advance, the label transfer generation device 1 and the suction drum 3. And each operation | movement of the container transfer apparatus 5 grade | etc., Is controlled. The control device 6 includes a memory (not shown) for storing various data.

  A label feed roller 203a in the label generating device, a cutting blade roller 204a, a label delivery drum 205, a remaining take-up reel 206, a suction drum 3, a star wheel 511 in the container transfer device 5, a turntable 521a, a star wheel 531, etc. The rotating member is connected to the control device 6 via the drive unit 7. The drive unit 7 is provided with a motor that generates a rotational force corresponding to each of the rotating members, and a servo amplifier and an inverter that control the rotational operation of the motor. The control device 6 performs control so that the rotation operations of the respective rotation members are linked via the drive unit 7.

  The control device 6 is connected to the heating device 4, a suction device 8 for a label delivery drum, which will be described later, and a suction device 9 for the suction drum, and an operation display device 10. The heating operation and the suction operations of the suction devices 8 and 9 are also controlled.

  The operation display device 10 is a device for an operator to perform various settings relating to a label sticking operation and to display an operation state of label sticking as display data. For example, when an operator performs a predetermined operation through the operation display device 10, an operation signal corresponding to the operation is output to the control device 6. Further, display data from the control device 6 is input to the operation display device 10, and display contents corresponding to the display data are displayed.

  Returning to FIG. 1, the label base material S wound around the supply reel 201 is guided by a plurality of guide rollers 202 in an initial setting, and between the label feed roller 203a and the auxiliary roller 203b, and the cutting blade roller 204a. And the auxiliary roller 204b so as to be wound around the remaining take-up reel 206 after being drawn. Accordingly, when a control signal is output from the controller 6 to the servo amplifier 702, the label feed roller 203a is rotated by the label feed motor 701, and the label base material S is fed out from the supply reel 201.

  The label cutting unit 204 includes a cutting blade roller 204a provided with a cutter blade (not shown) for cutting out the label base material S on the outer peripheral surface, an auxiliary roller 204b, and a cutter motor 703 that rotationally drives the cutting blade roller 204a ( 2) and a servo amplifier 704 (see FIG. 2) for controlling the cutter motor 703. As shown in FIG. 2, the servo amplifier 704 is also connected to the control device 6, and the cutter motor 703 is rotated by the control device 6 via the servo amplifier 704. Accordingly, when a control signal is output from the control device 6 to the servo amplifier 704, the cutter blade roller 204a is rotated by the cutter motor 703, and the label base material S supplied from the label feeding unit 203 becomes the cutter blade of the cut blade roller 204a. Cut out by.

  A label delivery drum 205 is in contact with an appropriate place on the peripheral surface of the cutting blade roller 204a, and the label L cut out by the cutting blade roller 204a is delivered to the label delivery drum 205 at the contact position. In FIG. 1, the heat-sensitive adhesive is applied to the surface of the label base material S on the side in contact with the cutting blade roller 204 a, but since the heat-sensitive adhesive is not activated, it is transferred to the label transfer drum 205. The label L is not adhered to the label delivery drum 205.

  On the other hand, the remaining take-up reel 206 is disposed on the downstream side of the label cut portion 204, and an unnecessary portion of the label base material S that has not become the label L is guided from the auxiliary roller 204b to the remaining take-up reel 206, and the remaining residue. It is taken up on a take-up reel 206. As shown in FIG. 2, the remaining take-up reel 206 is rotated by a take-up reel motor 707, and the rotation control of the take-up reel motor 707 is performed by a servo amplifier 708 and the control device 6.

  The control device 6 synchronously outputs control signals for the rollers of the label feed roller 203a, the cutting blade roller 204a, and the remaining take-up reel 206 in the label base material feed unit 203, and rotates these rollers in synchronization. Accordingly, as shown in FIG. 3, a plurality of labels L are sequentially turned by the cutter blades of the cutting blade roller 204a from the label base material S which is fed out from the supply reel 201 at a constant speed and taken up by the remaining take-up reel 206. And is supplied to the label delivery drum 205.

  The label transfer drum 205 is formed in a substantially cylindrical shape, and an appropriate position on the outer peripheral surface on the opposite side of the cutting blade roller 204a (Q point on the right peripheral surface of the label transfer drum 205 in FIG. 1) is in contact with the suction drum 3. Yes. As shown in FIG. 2, the label delivery drum 205 is rotated in a predetermined direction (clockwise in FIG. 1) by a label delivery drum motor 705 at a constant rotational speed, and the rotation control of the label delivery drum motor 705 is controlled by a servo. This is performed by the amplifier 706 and the control device 6.

  A large number of suction holes (not shown) are formed on the outer peripheral surface of the label delivery drum 205. When the label delivery drum 205 rotates, these suction holes are sucked by a suction device 8 (see FIG. 2) such as a compressor. It is configured to be. Therefore, the label L cut out by the label cutting unit 204 and conveyed along the peripheral surface of the cutting blade roller 204 a is transferred to the label transfer drum 205 by being attracted to the outer peripheral surface of the label transfer drum 205.

  The control device 6 synchronizes control signals for the label delivery drum 205 and the suction device 8 with control signals for the label feed roller 203a, the cutting blade roller 204a, and the remaining take-up reel 206 in the label base material feed unit 203. The label delivery drum 205 is rotated in synchronism with these rollers, and the suction device 8 performs the suction operation. Accordingly, the plurality of labels L continuously supplied from the cutting blade roller 204 a are sequentially received by the label delivery drum 205 and delivered to the suction drum 3 by the label delivery drum 205.

  The suction drum 3 has a substantially cylindrical shape like the label delivery drum 205, and the outer peripheral surface is covered with a rubber member. The reason why the outer peripheral surface is covered with the rubber member is to absorb the pressure because the side surface of the container B is pressed against the outer peripheral surface of the suction drum 3 when the label L is attached to the container B. The elastic member is not limited to the rubber member.

  As shown in FIG. 4, a suction surface 301 for sucking the label L is provided at a predetermined position on the outer peripheral surface of the suction drum 3, and the suction surface 301 has a plurality of suction holes arranged in a lattice pattern. 302 is formed. The diameter of the suction holes 302 is about 0.5 mm, and the distance between the suction holes is, for example, a vertical distance h of about 10 mm and a horizontal distance d of about 12 mm. The area where the plurality of suction holes 302 are formed in the suction surface 301 of the suction drum 3 has a rectangular shape that is slightly smaller than the size of the label L, as shown in FIG. Note that the arrangement of the suction holes 302 on the suction surface 301 of the suction drum 3 is not limited to the lattice shape, and can be appropriately changed to, for example, a staggered arrangement.

  A suction device 9 (see FIG. 2) such as a compressor is connected to the back surface (the inside of the suction drum 3) of the suction surface 301, and the suction hole 302 is sucked by the suction device 9 so that the label delivery drum 205 The delivered label L is adsorbed on the adsorption surface 301.

  The diameter of the suction drum 3 is set larger than the diameter of the label delivery drum 205. As shown in FIG. 2, the suction drum 3 is rotated in a predetermined direction (counterclockwise in FIG. 1) by a suction drum motor 709 at a constant rotational speed, and the rotation control of the suction drum motor 709 is controlled by a servo amplifier 710. Is performed by the control device 6. The rotation speed of the suction drum 3 is a speed at which the peripheral speed of the suction drum 3 and the peripheral speed of the label delivery drum 205 are the same.

  A heating device 4 is provided at an appropriate position upstream of the label delivery drum 205 of the suction drum 3. The heating device 4 heats and activates the heat-sensitive adhesive applied to the surface of the label L adsorbed on the adsorption surface 301 of the adsorption drum 3 by heating the adsorption drum 3. The heating control of the heating device 4 is performed by the control device 6, and the control device 6 causes the heating device 4 to perform the heating operation in synchronization with the rotation operation of the suction drum 3.

  Accordingly, when the label sticking apparatus 1 is operating, the suction drum 3 is rotated at a constant speed in a heated state, so that the label L is received by the suction surface 301 of the suction drum 3 from the label delivery drum 205 at the delivery position Q. When passed, the heat-sensitive adhesive of the label L (applied to the surface not contacting the suction surface 301 of the suction drum 3) is heated and activated by the suction drum 3, and the heat-sensitive adhesive of label L is activated. In this state, the suction drum 3 is moved to the sticking position P by the rotation of the suction drum 3.

  The container transfer device 5 receives a container B to which a label L supplied from the outside is not attached, and transfers the container B to a rotary device 52 (described later) and the container B from the container supply unit 51 to a predetermined size. The rotary device 52 that transports the circular orbit as a transfer path, and the container unloading unit 53 that receives the container B with the label L attached at the attaching position P from the rotary device 52 and carries it out to the outside.

  The container transfer device 5 is disposed on the right side of the suction drum 3 in FIG. Specifically, the rotary device 52 is disposed between the suction drum 3 and the container supply unit 51 and the container carry-out unit 53. On the transfer path (circular orbit) of the container B in the rotary device 52, The receiving position R of the container B from the container supply part 51, the sticking position P, and the delivery position T of the container B to the container discharge part 53 are arranged. In FIG. 1, the sticking position P is disposed at the left end of the circular orbit of the container B in the rotary device 52, the receiving position R is disposed slightly below the right end of the circular orbit, and the delivery position T is the same circle. Located slightly above the right end of the track. Accordingly, the container B is supplied from the lower right side of the label sticking device 1 from the outside and transferred in a circular path so as to pass through the sticking position P, and then from the upper right side of the label sticking device 1 to the outside. Discharged.

  The container supply unit 51 includes a star wheel 511 for transferring the container B, a guide member 512 for guiding the container B, a star wheel motor 715 for rotating the star wheel 511 (see FIG. 2), And an inverter 716 (see FIG. 2) for controlling the wheel motor 715. As shown in FIG. 2, the inverter 716 is connected to the control device 6, and the star wheel motor 715 is rotationally driven by the control device 6 via the inverter 716.

  The star wheel 511 is formed with a recess 511a for holding the container B. The container supply unit 51 receives the container B to which the label L supplied from the outside is not attached by the recess 511 a of the star wheel 511, and transfers the container B to the rotary device 52 by the rotation of the star wheel 511.

  The container carry-out section 53 basically guides the container B and the star wheel 531 for transporting the container B, just like the container supply section 51, only the transfer direction of the container B is opposite to the container supply section 51. And a star wheel motor 717 for rotating the star wheel 531 (see FIG. 2) and an inverter 718 for controlling the star wheel motor 717 (see FIG. 2). The inverter 718 is also connected to the control device 6, and the rotational drive of the star wheel motor 717 is performed by the control device 6 via the inverter 718.

  The star wheel 531 is formed with a recess 531a for holding the container B, and the container carry-out unit 53 removes the container B to which the label L transferred by the rotary device 52 is attached to the recess 531a of the star wheel 531. And is carried out to the outside (next process) by the rotation of the star wheel 531.

  The rotary device 52 transfers the container B supplied by the container supply unit 51 to the sticking position P, presses the container B against the suction drum 3 at the sticking position P, and sticks the label L to the label B. The container B to which L is attached is transferred to the container carry-out unit 53. The rotary device 52 includes a turntable 521a that rotates around the center O, an extended portion 521b that extends from the turntable 521a and is provided with a container rotating device 522, and a turntable that rotates the turntable 521a. The rotating mechanism 521 includes a motor 711 (see FIG. 2) and an inverter 712 (see FIG. 2) that controls the rotating table motor 711.

  As shown in FIG. 2, the inverter 712 is connected to the control device 6, and the rotation of the rotary table motor 711 is performed by the control device 6 via the inverter 712. The turntable 521a is rotated in a predetermined direction (clockwise in FIG. 1) at a constant rotation speed by the turntable motor 711. The rotation speed of the turntable 521a is the same as the rotation speed of the suction drum 3.

  The rotation operation of the turntable 521a is performed in synchronization with the rotation operation of the suction drum 3 by the control device 6, and when the suction surface 301 of the suction drum 3 passes the sticking position P, the turntable 521a. The extending portion 521b is controlled so that the tip (portion holding the container B) passes through the sticking position P.

  The container rotating device 522 includes a container rotating unit 523 (see FIG. 6) that rotatably holds the container B at the tip of the extending portion 521b. In FIG. 1, the container rotating unit 523 rotatably holds the container B at the receiving position R of the container B transferred from the container supply unit 51 and supplies the container B to which the label L is attached to the container discharging unit 53. The container B is opened at the delivery position T.

  The extending portion 521b further includes a container rotation motor 713 that generates the rotation force of the container B, and a plurality of gears that transmit the rotation force of the container rotation motor 713 to the container rotation portion 523 and rotate the container B. A transmission mechanism (not shown) is provided. The container rotation motor 713 is connected to the control device 6 via a servo amplifier 714 (see FIG. 2), and the rotation operation of the container rotation unit 523 is performed by the servo amplifier 714 and the control device 6. Note that the rotational force of the container rotation motor 713 may be transmitted to the container B by another container rotating unit 524 (see FIG. 6) that holds the container B rotatably from above. Or you may transmit to the container B by both the container rotation parts 523,524.

As shown in FIG. 5, when the container B is transferred to the sticking position P by the rotation of the turntable 521a, the container rotating device 522 transmits the rotational force of the container rotating motor 713 by the transmission mechanism. And the container B is rotated in a predetermined direction (clockwise in FIG. 5) at a predetermined rotational speed. Specifically, as shown in FIG. 5, when the peripheral speed of the suction drum 3 is v ₁ [mm / s], the container rotating device 522 has a peripheral speed v _{2 that} is larger than the peripheral speed v ₁ of the suction drum 3. Rotate container B. The relationship between the circumferential velocity v ₂ of the peripheral speed v ₁ and the container B the suction drum 3, will be described later. In FIG. 5, the suction hole 302 of the suction drum 3 is schematically shown.

  When the container B is transferred to the sticking position P by the rotary device 52, the container B is positioned on a line connecting the rotation center O of the rotary device 52 and the rotation center O ′ of the suction drum 3 as shown in FIG. As shown in FIG. 6, the side surface of the container B is pressed against the outer peripheral surface of the suction drum 3. At this time, since the label L is transferred to the sticking position P in a state where the heat-sensitive adhesive is activated by the suction drum 3, the side surface of the container B is pressed against the heat-sensitive adhesive of the label L, whereby the label L is adhered to the side surface of the container B (see FIG. 6). In addition, the detail of the sticking operation | movement of the label L in the sticking position P is mentioned later.

  Next, the sticking operation of the label sticking apparatus 1 will be described.

  Referring to FIG. 1, the long label substrate S wound around the supply reel 201 is fed out of the supply reel 201 when the label feed roller 203 a of the label feed device 203 is driven to rotate. The fed-out label base material S is cut out when the cutting blade roller 204a of the cutter device 204 is rotationally driven, and is separated into a portion that becomes a label L and an unnecessary portion. The cut-out label L is adsorbed on the surface of the label delivery drum 205 sucked by the suction device 8 and transferred by the rotation of the label delivery drum 205. On the other hand, the unnecessary portion is taken up by the remaining take-up reel 206 when the remaining take-up reel 206 is driven to rotate.

  The label L transferred by the label transfer drum 205 is transferred to the suction drum 3 at a predetermined transfer position Q on the label transfer drum 205. The delivered label L is sucked by the suction surface 301 of the suction drum 3 sucked by the suction device 9 and transferred to the sticking position P by the rotation of the suction drum 3.

On the other hand, the containers B to which a large number of labels L supplied from the outside are not attached are separated one by one by the recesses 511a of the star wheel 511 of the container supply unit 51 and transferred to the rotary device 52 side. It is received by the container rotating part 523 provided in the extending part 521b of the rotating mechanism 521. The container B received by the container rotating part 523 is transferred to the sticking position P as the turntable part 521a rotates. At this time, the container B is rotated at substantially the same peripheral speed as the peripheral speed v ₁ of the suction drum 3 by rotating the container rotating part 523 by the container rotating motor 713.

When the container B is transferred to the sticking position P while being rotated by the container rotating portion 523, sticking of the label L to the container B is started. At this time, the peripheral speed of the container B is switched to a peripheral speed v ₂ that is faster than the peripheral speed v ₁ of the suction drum 3 as shown in FIG. Then, the peripheral speed of the container B is returned from v ₂ to v ₁ at time t ₂ when the label L finishes sticking to the container B.

  In the middle of the label L being sucked by the suction surface 301 of the suction drum 3 and being transferred to the sticking position P, the portion facing the suction hole 302 of the label L is in the suction hole 105B as shown in FIG. A plurality of convex portions 12 arranged in a lattice shape corresponding to the suction holes 302 arranged in a lattice shape in the label L are generated. And the part 12a corresponding to the convex part 12 of the heat-sensitive adhesive 11 applied to the back surface of the label L is inactive because the heat of the suction drum 3 is not sufficiently transmitted due to the suction holes 302. . Therefore, even if the label L is attached to the container B so as to transfer the label L in this state, the portion 12a corresponding to the convex portion 12 of the label L is not adhered to the container B by the heat-sensitive adhesive 11, and the convex portion 12 is sucked. It will remain as a mark.

However, in the label sticking apparatus 1 according to this embodiment, when the sticking of the label L to the container B is started as described above, the peripheral speed of the container B is higher than the peripheral speed v ₁ of the suction drum 3. 8 is increased to a faster peripheral speed v ₂ , and as shown in FIG. 8 (b), when the leading end of the label L is adhered to the side surface of the container B by the heat-sensitive adhesive 11, the moving speed of the label L is adjusted to the suction drum. The peripheral speed v ₁ of the container 3 increases to the peripheral speed v ₂ of the container B, and the label L is pulled by the container B at a speed (v ₂ −v ₁ ) relative to the peripheral surface of the suction drum 3. .

  As a result, as shown in FIG. 8B, the label L slides forward (on the right side in FIG. 8) on the suction surface 301 of the suction drum 3, and the position of the convex portion 12 formed on the label L is The heat of the suction drum 3 is transferred to the portion 12a corresponding to the convex portion 12 of the heat-sensitive adhesive 11 by being displaced from the suction hole 302, and the portion 12a is activated.

  Thereafter, as shown in FIG. 9, the label L is pressed against the suction drum 3 by the container B, and is stuck so as to be wound around the side surface of the container B while being pulled.

In FIG. 9, (a) is when the tip of the label L is transferred to the sticking position P, and the container B is transferred to the sticking position P, and the label L starts to stick to the container B. The state where the tip of the label L is not adhered to the container B is shown. Until the state (a) is reached, the suction drum 3 rotates at the peripheral speed v ₁ and the container B also rotates at the peripheral speed v ₁ . The label L sucked on the suction surface 301 of the suction drum 3 has a convex portion 12 at a portion corresponding to the suction hole 302.

On the other hand, (b), the tip of the label L is adhered to the container B, and changes the moving speed of the label L from the circumferential velocity v ₁ of the suction drum 3 in the circumferential velocity v ₂ of the container B, the label L is adsorbed drum 3 shows a state of sliding on the three suction surfaces 301. In (b), the label L is pulled by the rotation of the container B as the peripheral speed of the container B increases to v ₂ , and the label L slides on the suction surface 301 of the suction drum 3 by the distance D.

Since the suction drum 3 rotates at the peripheral speed v ₁ and the container B moves on the circular orbit by the rotation mechanism 521, the same figure is strictly shown by the time difference between FIGS. 9A and 9B. In FIG. 9B, the suction drum 3 and the container B are both moved to the right side, but the time difference is so small that in FIGS. 9A and 9B, the suction drum 3 and the container B are not moved. Yes. Further, the convex portion 12 is not eliminated simply by sliding the label L on the suction surface 301 of the suction drum 3, but in FIG. 9B, only the position of the convex portion 12 is shown for convenience of drawing, and the convex shape is shown. Is omitted.

After the state of FIG. 9B, the label L is pressed against the suction drum 3 by the container B and pulled on the side surface of the container B until the rear end of the label L is adhered to the container B. Since the winding operation is continued, the suction surface 301 of the suction drum 3 passes through the sticking position P at a speed v ₁ as shown in FIGS. wound at a speed v ₂ to the vessel B by the rotation of the B. As a result, the label L is sequentially stuck to the container B at the sticking position P while sliding forward on the suction surface 301 of the suction drum 3 with a speed difference (v ₂ −v ₁ ).

  When the convex portion 12 of the label L is pressed against the container B at the sticking position P, the convex shape is flattened and the portion 12a corresponding to the convex portion 12 of the heat-sensitive adhesive has already been activated. The part 12 is adhered to the side surface of the container B in a flat state. As a result, as shown in FIG. 9D, the label L is stuck to the container B without leaving a suction mark. According to the present invention, when sticking a transparent thermosensitive label to a transparent container, a suction mark is not generated, so that a more highly transparent decoration is possible.

In the above description, the peripheral speed of the container B is kept substantially the same as the peripheral speed v ₁ of the suction drum 3 until the peripheral speed is transferred to the sticking position P. Although it was raised to the circumferential speed v ₂ after the start, it is stopped until the container B is received from the container supply unit 51 and transferred to the sticking position P, and at the same time the sticking is started, the peripheral speed v ₂ You may make it rotate.

The peripheral speed of the container B is set to a peripheral speed v ₂ that is faster than the peripheral speed v ₁ of the suction drum 3 after the tip of the label L is adhered to the container B until the sticking is completed. pulling the label L by the container B, since it is for shifting the position of the convex portion 12 due to the suction of the suction holes 302 is slid over the suction surface 301 of the suction drum 3 from the suction hole 302, the peripheral speed v ₂ is Based on the horizontal dimension d of the suction hole 302 and the relative speed (v ₂ -v ₁ ) with respect to the suction drum 3, it may be set to an appropriate value that can achieve the purpose.

In this case, in this embodiment, since the diameter of the circular orbit for transferring the container B by the turntable 521a is relatively large with respect to the diameter of the suction drum 3, the moving speed of the container B on the circular orbit at the sticking position P. The moving speed of the label L adsorbed on the adsorbing drum 3 is larger than that, and the container B is stopped with respect to the label L in a very short time for adhering the label L, and rotates at the peripheral speed v ₂ . Can be considered. Accordingly, the setting of the peripheral speed v _2, it is possible to ignore the movement speed of the circular orbit of the container B.

  Of course, the scope of the present invention is not limited to the embodiment described above. For example, the configuration of the label sticking device in which the label is stuck to the container shown in the above embodiment is an example, and the configuration according to the above embodiment is not limited as long as it has the same function.

  In the above embodiment, the label L is attracted to the suction surface 301 of the cylindrical suction drum 3 and transferred to the sticking position P, and the container B is also transferred to the sticking position P by the rotating mechanism 521 that draws a circular orbit. Therefore, the transfer path of the label L and the container B is circular, but the transfer path of the label L and the container B is not limited to a circle. As shown in FIG. 9, the present invention allows the label L and the container B to be in pressure contact with the label L while rotating the container B in the moving direction of the label L while moving the label L and the container B in the same direction. If it has the structure which sticks L to the container B, it can apply to arbitrary moving paths.

It is a schematic block diagram which shows the label sticking apparatus which concerns on this invention. It is a block diagram which shows the electric constitution of a label sticking apparatus. It is a figure which shows the production | generation method of the label in a label production | generation apparatus. It is a figure which shows the suction hole formed in the outer peripheral surface of a suction drum, and the label attracted | sucked by the suction hole. It is a top view which shows a mode that a label is stuck to a container in the sticking position. It is a side view which shows a mode that a label is stuck to a container in the sticking position. It is a figure which shows the change of the rotational speed of a container. It is a figure which shows the state which a label slides on an adsorption | suction drum. It is a figure which shows the process in which a label is affixed on a container from an adsorption drum. It is a schematic block diagram which shows the conventional label sticking apparatus. It is a figure which shows a state when the conventional label is stuck on a container. It is a figure for demonstrating the sticking operation | movement to the container of the label in the conventional label sticking apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Label sticking apparatus 2 Label production | generation apparatus 201 Supply reel 202 Guide roller 203 Label base material feed part 204 Label cut part 205 Label delivery drum 206 Remaining take-up reel 3 Adsorption drum 301 Adsorption surface 302 Suction hole 4 Heating apparatus 5 Container transfer apparatus DESCRIPTION OF SYMBOLS 51 Container supply part 52 Rotary apparatus 53 Container carry-out part 6 Control apparatus 7 Drive part 8,9 Suction apparatus 10 Operation display apparatus 11 Heat sensitive adhesive 12 Convex part B Container L Label S Label base material

Claims (5)

It has a suction surface provided with a number of suction holes, holds the label by sucking the surface of the label coated with a heat-sensitive adhesive on the back surface with the number of suction holes, and heating the label to Label holding means for activating the heat-sensitive adhesive;
Label transfer means for transferring the label along the path by moving the label holding means along a predetermined path;
Container holding means for holding the container rotatably;
Container transporting means for moving the container holding means along a path different from the label holding means, and pressing the side surface of the container against the back surface of the label held by the label holding means at a predetermined sticking position on the path When,
In a label sticking apparatus that winds a label that transports the path around the side surface of the container at the sticking position and sticks it with the heat-sensitive adhesive.
Container rotating means for rotating the container so that the movement of the side surface is in the same direction as the movement of the label when the side surface of the container is pressed against the label;
Container rotation speed control means for controlling the rotation speed of the container to a predetermined rotation speed in which the movement speed of the side surface of the container is faster than the movement speed of the label;
A label sticking device comprising:   The predetermined rotation speed controlled by the container rotation speed control means is determined between the time when the leading edge of the label is adhered to the side surface of the container at the adhesion position and the time when the rear edge is adhered. The label sticking apparatus according to claim 1, wherein the label is pulled at a rotation speed, and the label sticking apparatus has a rotation speed at which the label is slid on the suction surface of the label holding unit to be larger than the diameter of the suction hole. The label holding means is rotatably supported and includes a cylindrical drum having the suction surface formed on a part of an outer peripheral surface thereof, and a plurality of suction holes provided in the drum and formed on the suction surface. A suction means for sucking, and a heating means for heating the drum;
The label transfer means is composed of drum driving means for rotating the drum at a predetermined rotational speed,
The container transfer means includes a turntable that is rotatably supported and provided with a support portion that rotatably supports the container, and a turntable drive means that rotates the turntable in a direction opposite to the drum. Configured,
The container transfer means is configured such that the drum driving means causes the drum's suction surface to be a surface where the outer peripheral surface of the drum intersects a line connecting the rotation center of the drum and the rotation center of the turntable. The container supported by the front-end | tip of the said turntable is transferred to the said sticking position at the timing which the adsorbed label is transferred to the said sticking position, The side surface of the said container is press-contacted to the said label. The label applicator described in 1.   The container rotation control means sets the rotation speed of the container to the predetermined rotation speed until the container supported at the tip of the turntable is transferred to the sticking position and the side surface of the container is pressed against the label. The label sticking apparatus of Claim 3 to set.   The container rotation control means rotates the container at a speed slower than the predetermined rotation speed until the container supported at the tip of the turntable is transferred to the sticking position, and the side surface of the container is The label sticking apparatus of Claim 3 which raises the rotational speed of the said container to the said predetermined rotational speed when it press-contacts to the said label.

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