JP3036724B2 - Labeling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a labeling apparatus for attaching a label to a container.

[0002]

2. Description of the Related Art Conventionally, for example, a label is generally attached to a container via an adhesive, and an apparatus for attaching the label to the container is, for example, shown in FIG. In the apparatus, a label cut to a predetermined length is adsorbed on a rotating suction drum, and the label is attached to a peripheral surface of the container while rotating a cylindrical container transferred by a transfer device. Things.

That is, when the container 51 is transferred in the direction of the arrow by the screw shaft 50, it is supplied to the star wheel 53, and the container 51 comes into contact with the guide plate 52, so that it rotates in the direction of the arrow. Further, the container 51 transferred to the star wheel 53 comes into contact with the suction drum 55 rotating in the transfer direction of the container 51 (the same direction as the star wheel 53).
The container 51 rotates in the opposite direction to the above, and the label adsorbed on the suction drum 55 is attached to the container 51 that rolls on the peripheral surface of the suction drum 55.

[0004]

However, since the above-mentioned apparatus is configured to stick the label to the container 51 by rolling the container 51 on the suction drum 55, the long label is used. In the case of sticking, it is necessary to roll the container 51 by a distance corresponding to the label length, and the moving distance of the container 51 at the time of sticking the label becomes long.

As a result, a large-diameter suction drum 55 is required, resulting in a disadvantage that the apparatus becomes large. In addition, since the suction drum 55 requires accuracy, the diameter of the suction drum 51 is limited, and there is a problem that a long label cannot be attached.

[0006] The present invention has been made in view of the above-mentioned conventional problems, and without increasing the diameter of the suction drum.
An object of the present invention is to provide a labeling device capable of downsizing a device by ensuring that a long label can be stuck to a container.

[0007]

The technical solution taken by the present invention to solve the above-mentioned problem is that the label 2 held on the rotating drum 7 is transferred to the container 16 transferred by the transfer device. in the labeling apparatus that is stuck, before
The transfer device is arranged such that the concave portion 19a with which the container 16 is engaged is
Star wheel 19
The container 16 which contacts the drum 7 is held in the concave portion 19a of 19.
A pair of holding rollers 22 and 22 are provided, respectively,
Is held by the suction drum 7 and both holding rollers 22
The contact position between the center O of the star wheel 19 and the container 16
The rotation center O1 of the receiving drum 7 is on a straight line, the drum 7 rotates in the direction opposite to the direction in which the container 16 is transferred by the star wheel 19, and presses the container 16 transferred by the star wheel 19 against the drum 7. A transfer body 25 that moves in the transfer direction of the container 16 so as to rotate while rotating
Transport speed of該移Okukarada 25 is faster than the peripheral speed of the drum 7, also faster setting than the feeding speed of the star wheel 19
Is to be determined .

Further, the transfer device is constituted by a star wheel 19 having a concave portion 19a with which the container 16 is engaged in a circumferential direction.

Moreover, the recess 19a of the star wheel 19
A holding roller for holding the container 16 in contact with the drum 7
Preferably, 22 and 22 are provided respectively.

Further, the transfer device may be constituted by a screw shaft 31.

[0011]

In the labeling device of the present invention, when the container 16 is transferred by the transfer device and abuts on the drum 7, the container 16
One end of the label 2 transferred to the drum 7 in synchronism with the transfer of the label 2 is attached to the container 16.

Further, since the rotation direction of the drum 7 and the transfer direction of the transfer body 25 are opposite to each other, the container 16 is rotated by the relative movement between the two, and the labels 2 are sequentially attached to the container 16. Become.

Further, the transfer speed of the transfer body 25 is the same as that of the drum 7.
Since the peripheral speed is set to be higher than the peripheral speed, the container 16 is transferred and the sticking of the label 2 is completed due to the difference between the two speeds. Therefore, by arbitrarily setting the speed difference between the transfer body 25 and the drum 7 according to the length of the label 2, the container 2 is moved by a predetermined distance regardless of the length of the label 2, so that the label 2 is transferred. Can be stuck.

Further, when the transfer device is constituted by a star wheel 19 and a pair of holding rollers 22 are provided in a concave portion 19a of the star wheel 19, the container 16
And the holding roller 22 can support the container 16 at three points. Even if the container 16 is inclined or displaced during transfer, the container 16 can be brought into close contact with the drum 7, The label 2 can be reliably stuck at a predetermined position.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show one embodiment of the present invention,
In FIG. 1, reference numeral 1 denotes a take-up roll on which a continuous heat-sensitive label 2 a made of a long polyester film, on which a product name or the like is printed, and a heat-sensitive adhesive is applied on one entire surface, is wound. It can be fed out via the roller 3. The heat-sensitive adhesive is not particularly limited, but is a delayed tack adhesive that maintains tackiness for a predetermined time after heating, or a hot-melt adhesive that is activated by heating to exhibit adhesiveness. It is suitable.

Reference numeral 4 denotes a cutting unit for cutting and forming the continuous label 2a as individual labels 2 of a predetermined size. The rotary cutter blade 6 is opposed to a roller 5 capable of holding the label 2 by vacuum suction. It is provided.

Reference numeral 7 denotes a suction drum as a holding member which is rotatably provided with a rotation center axis 9a set in a vertical shape.
Is provided with a suction hole (not shown) for receiving and holding by suction suction.

Reference numeral 9 denotes a heating device for heating the heat-sensitive adhesive of the label 2 adsorbed on the suction drum 7, provided near the suction drum 7 and downstream of the cut unit 4. A heater 10 is built in the heating device 9, and the heater 10 can blow hot air toward the entire heat-sensitive adhesive of the label 2. Reference numeral 11a denotes an air dancer provided with a suction fan 11b or an ejection fan for applying tension to the film 2a to be fed.

Reference numeral 15 denotes a supply device for transferring and supplying a container 16 as a label mounting object to the suction drum 7 at regular intervals, and a screw shaft 17 for dividing and transferring a large number of containers 16 transferred by a belt conveyor 18. And the screw shaft
A star wheel 19 is provided as a transfer device for receiving the container 16 transferred to 17. Starwheel 19 is container 16
Has a plurality of concave portions 19a in the circumferential direction with which the concave portions 19a are engaged. Container 16
Has a substantially cylindrical shape as shown in FIG.
The long label 2 is stuck over the entire surface in the circumferential direction.

Reference numeral 20 denotes a container engaged with the star wheel 19.
The supply side guide plate for guiding the container 16 is transferred to the star wheel 19 while the container 16 rolls on the guide plate 20.

Reference numerals 22 denote containers which come into contact with the suction drum 7
A pair of holding rollers for holding 16 are provided below the star wheel 19 and rotatably in the respective recesses 19a. Therefore, the container 16 engaged with the concave portion 19a of the star wheel 19 can be held by pressing both the holding rollers 22 against the peripheral surface of the suction drum 7. The supply of the container 16 and the label 2 transferred to the suction drum 7 are synchronized, and when the container 16 comes into contact with the suction drum 7, as shown in FIG. The contact position and the rotation center O1 of the suction drum 7 are on a straight line.

Reference numeral 24 denotes a belt conveyor device for rotating the container 16 in cooperation with the suction drum 7, and is provided below the star wheel 19 and along the feeding direction of the container 16. The belt conveyor device 24 includes an annular belt 25 as a transfer body pressed against the lower part of the container 16 and a pair of pulleys 23 for rotating the belt 25.

The rotation axis of one pulley 23 coincides with the rotation center O of the star wheel 19, and the outer diameter D of the belt 25 wound on the pulley 23 is equal to the groove diameter of the concave portion 19a of the star wheel 19. They are set almost identically. In addition, container 16
The rotation direction of the belt 25 contacting the suction drum 7 is provided opposite to the rotation direction of the suction drum 7, and the rotation speed of the belt 25 is higher than the peripheral speed of the suction drum 7. Therefore, the container 16 in contact with the suction drum 7 is
, And the label 2 is transported while being adhered at a speed of about half the speed difference between the belt 25 and the suction drum 7.

The speed difference between the belt 25 and the suction drum 7 can be set arbitrarily. The smaller the difference in speed, the shorter the moving distance of the container 16 when the label 2 is attached. When moving the label 2 by a predetermined distance, the label 2 having an arbitrary length can be attached to the container 16. The rotation speed of each of the star wheel 19 and the pulley 23 can be set, and a speed difference is provided between the two so that the rotation speed of the pulley 23 is slightly increased in order to smoothly transfer the container 16.

Reference numeral 28 denotes a discharge device for moving the container 16 on which the label 2 is mounted to the next process position while further pressing the label 2, and giving a speed difference between the container 16 by a pair of belts 29 having the same rotation direction. Thereby, it is transported while rotating and guiding.

This embodiment is constituted as described above. Next, a case where the label 2 is attached to the container 16 using the apparatus will be described. First, the label 2 cut to a predetermined length by the cutting unit 4 is suction-held on the outer peripheral surface of the suction drum 7 which rotates in the direction of the arrow so that the heat-sensitive adhesive becomes the surface. When the label 2 reaches the front of the heating device 13, hot air is blown from the heater 10 toward the heat-sensitive adhesive provided on the entire surface of the label 2. At this time, the heat-sensitive adhesive is rapidly heated to a predetermined temperature and activated to exhibit tackiness.

On the other hand, when the container 16 is transferred by the screw shaft 17, the container 16 is transferred to the rotating star wheel 19. The container 16 delivered to the star wheel 19 abuts on the guide plate 20 at the time of transfer, and rotates while being engaged with the star wheel 19 as shown in FIG.

Further, when the container 16 reaches the suction drum 7,
The suction drum 7 rotates the container 16 in the same direction, so that smooth delivery can be performed. In order to transfer the container 16 more smoothly, the rotation speed of the container 16 by the suction drum 7 is set to
It is preferable to set the rotation speed to be approximately equal to or greater than 16 rotation speeds. The container 16 is held by the suction drum 7 and the holding roller 22. At this time, the center O of the star wheel 19 and the contact position of the container 16 and the suction drum 7
And the rotation center O1 is on a straight line, so that the holding roller 22 can surely hold the container 16 from both sides.

Further, since the label 2 is transferred by the suction drum 7 in synchronization with the transfer of the container 16, the label 2 enters between the container 16 and the suction drum 7, and the belt 25
The tip of the label 2 is attached to the container 16 so that the label 16 is pressed against the peripheral surface of the suction drum 7. Since the rotation direction of the suction drum 7 and the rotation direction of the belt 25 are opposite to each other,
The peripheral surface of the suction drum 7 is rotated, and when the container 16 rotates, the label 2 is activated and is sequentially adhered to the container 16 via a heat-sensitive adhesive exhibiting tackiness.

The container 16 is transported while rotating due to the difference between the rotation speed of the belt 25 and the rotation speed of the suction drum 7, and when the winding end position is reached, the container 2 rotates once. The label 16 is attached to the container 16 after the label 2 is completely attached. The container 16 to which the label 2 is attached rolls on the guide plate 33 for discharge, and the label 2 is pressed by the belt 29. While being rotated, it is transferred to the next step by the belt conveyor 18.

FIG. 5 shows another embodiment of the present invention. In this embodiment, a star wheel is used as a transfer device according to the first embodiment.
In contrast to 19, the screw shaft 31 is employed. Therefore, the container 16 transported by the screw shaft 31 is rotated by the guide plate 20 and rotated in the same direction by the belt 25, so that the label 2 is adhered.

The present invention is not limited to the above embodiment, and the shape of the container 16 is not limited to the above embodiment. In addition to the label 2 coated with the heat-sensitive adhesive, the label 2 adsorbed and held on the adsorption drum 7 is used.
Further, an adhesive may be applied, and the design of other members can be freely changed.

[0033]

According to the present invention, the drum rotates in the direction opposite to the direction in which the containers are transferred by the transfer device, and the transfer body that moves in the direction in which the containers are transferred so as to rotate while pressing the drum against the drum. Since the transfer speed of the transfer body is set faster than the peripheral speed of the drum,
Even if the label is long, it is possible to securely adhere the label to the container over its entire length,
Moreover, it is not necessary to increase the diameter of the drum according to the length of the label, and the apparatus can be downsized.

Further, since the transfer device is constituted by a star wheel, and a pair of holding rollers are provided in a concave portion of the star wheel , the container can be supported at three points by the drum and the holding roller. Even when the container is tilted or misaligned, the container can be securely held and brought into close contact with the drum, and the label can be stuck to a predetermined position of the container without fail.
Also, the transfer speed of the transfer body is the rotation speed of the star wheel.
Because it is set faster than
Transfer of the container to the transfer body can be performed smoothly.
Wear.

[Brief description of the drawings]

FIG. 1 is an overall plan view including a partial cross section showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a main part in a state where the label is attached to a container.

FIG. 3 is a plan view showing a main part in a state where the label is attached to a container.

FIG. 4 is a sectional front view showing a state where a label is attached to the container.

FIG. 5 is a main part plan view showing another embodiment of the present invention.

FIG. 6 is an overall plan view showing a conventional example.

[Explanation of symbols]

7: adsorption drum (drum), 2: label, 19: star wheel (transfer device), 16: container, 25: belt (transfer body), 31: screw shaft (transfer device)

Claims (1)

(57) [Claims] 1. A container (16) for transferring a label (2) held on a rotating drum (7) by a transfer device.
In the labeling apparatus that stuck to the transfer
The feeding device is arranged such that the recess (19a) with which the container (16) is engaged
Star wheel (19)
The recess (19a) of the wheel (19) has a contact with the drum (7).
A pair of holding rollers (22) for holding the contacting container (16),
(22) are provided, and the container (16) is a suction drum
(7) and when the rollers are held by both holding rollers (22),
Center (O) of tar wheel 19 and contact position of container (16)
The rotation center (O1) of the suction drum (7) is on a straight line.
The drum (7) rotates in a direction opposite to the direction in which the container (16) is transferred by the star wheel (19), and transfers the container (16) transferred by the star wheel (19) to the drum (7). in order to rotate while pressed, comprising a conveying member (25) moving in the transport direction of the container (16) and the transporting speed of the該移Okukarada (25) is faster than the peripheral speed of the drum (7), also , From the feed speed of the star wheel (19)
A labeling device characterized by being set quickly .