JP2000025725A - Label sticking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a label sticking performance by a simpler and more inexpensive structure as compared with a conventional structure. SOLUTION: A first heating means 12 and a second heating means 16 are formed so as to heat and activate a label transferred by a sticking drum 4. It is so designed that this first heating means 12 blows hot air to an outer circumferential face of the sticking drum 4 to heat the drum 4 while the second heating means 16 blows hot air to an inner circumferential face of the drum 4 to heat the drum 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label sticking apparatus in which a label is stuck to a container by heating an adhesive surface of the label to activate the adhesive, and more particularly to a heating apparatus for the label. About.

[0002]

2. Description of the Related Art Conventionally, as a label sticking apparatus, a sticking drum which is rotatably provided on a frame, conveys the adhesive surface of the label outward, and sticks the label to a container, and a frame provided on the frame. Further, there is known a device provided with a heating means for heating the adhesive surface of the label conveyed by the sticking drum to activate the adhesive. By the way, conventionally, in order to improve the processing capacity, it is known that in addition to the first heating means for heating the outer peripheral surface of the attaching drum, a second heating means for heating the inner peripheral surface of the attaching drum is provided ( JP-A-7-19114, JP-A-7-26
7231, JP-A-8-113224). In Japanese Utility Model Laid-Open Publication No. 7-19114, a blower is used as the first heating means, and a heater is built in the sticking drum as the second heating means. Also, Japanese Patent Application Laid-Open No. 7-26723
In Patent Document 1, a blower is used as a first heating unit, and a heater is independently fixed as a second heating unit in a sticking drum. Further, in Japanese Patent Application Laid-Open No. H08-113224, a blower is used as a first heating means, while a second heating means is used.
As a heating means, a plurality of heat mediums are buried at equal intervals in the circumferential direction of the sticking drum, and the heat medium is heated by a blower.

[0003]

SUMMARY OF THE INVENTION
In Japanese Patent Application No. -19114, since the heater rotates in conjunction with the sticking drum, a rotary connector for the heater is required, so that the configuration is complicated and the cost is increased. Further, in Japanese Patent Application Laid-Open No. Hei 7-267231, since a heater is simply provided in the sticking drum, heat conduction efficiency is poor and it is difficult to increase the processing capacity. Further, in Japanese Patent Application Laid-Open No. H08-113224, since the heat medium is embedded in the sticking drum, the structure of the sticking drum is complicated and the cost is high. In addition, the surface of the sticking drum has a portion where the heat medium is embedded and another portion. There is a disadvantage that a difference in temperature occurs. The present invention has been made in view of such circumstances, and provides a label sticking apparatus having a simple configuration, a low cost, and a high processing capability.

[0004]

According to the present invention, in the label sticking apparatus described above, the sticking drum is constituted by a hollow cylindrical member, and the heating means is formed by blowing hot air to the outer peripheral surface of the sticking drum. It comprises a first heating means for heating and a second heating means for heating by blowing hot air onto the inner peripheral surface of the sticking drum.

[0005]

According to the above-described structure, since the hot air having a high heating efficiency is blown onto the outer peripheral surface and the inner peripheral surface of the attaching drum for heating, the processing capacity can be increased as compared with the related art. Further, the first heating means and the second heating means are a blower,
Since the second heating means is constituted by a heat source and a pipe connecting them, the structure can be simplified and the cost can be reduced as compared with the case where the second heating means is provided with a heater or a heat medium as in the related art.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. In FIG. 1, a label sticking apparatus 1 includes a columnar delivery roller 3 provided on a frame 2 and rotated clockwise in a horizontal plane. A cylindrical sticking drum 4 which is provided diagonally above and right above the delivery roller 3 and is rotated in a counterclockwise direction;
The sticking drum 4 is rotatably driven by a drive unit (not shown) in synchronization with a transport unit 5 for transporting the container.

At a position diagonally below and to the left of the delivery roller 3, a feed roller 7 for drawing out a roll label L wound on a reel (not shown) and a leading end of the roll label L sent from the feed roller 7 are cut. A cutter 8 is provided, and the label cut into a predetermined length by the cutter 8 is rotated by the delivery roller 3 in a clockwise direction after the adhesive surface of the label is sucked by the delivery roller 3, and then the adhesive surface is turned outward at the supply position A. And is transferred to the sticking drum 4. A large number of suction ports (see FIG. 3) are provided on the outer peripheral surface of the delivery roller 3, and the labels cut by the cutter 8 are suctioned by the suction ports and transported to the supply position A, where the supply is performed. The suction is stopped at the position A, and the label is transferred to the sticking drum 4.

[0008] As shown in FIG.
Similarly to the delivery roller 3, a plurality of suction ports 10 are provided on the outer peripheral surface thereof. The suction port 10 sucks the label discharged from the delivery roller 3 and transports the label from the supply position A to the application position B. , This pasting position B
, Labels are sequentially attached to containers (not shown) which are transported from the right side by the transport device 5. Outside the sticking drum 4, the first heating means 11, 1, which blows out hot air from the position beyond the supply position A to the position just before the sticking position B, respectively.
2 are connected so as to be continuous.
By blowing high-temperature hot air blown from 2 onto the adhesive surface of the label sucked on the outer peripheral surface of the attaching drum 4, the adhesive on the adhesive surface of the label can be activated. Further, in this embodiment, a second heating means 16 for blowing hot air is provided inside the attaching drum 4 over a range from before the temperature sensor 15 to just before the attaching position B, and the second heating means 16 is provided. By blowing high-temperature hot air blown from the inside onto the inner peripheral surface of the attaching drum 4, the attaching drum 4 can be heated from the inside.

The first heating means 11 and 12 and the second heating means 16 include blowers 21, 22 and 23 provided at the ends of pipes 18, 19 and 20, respectively.
Heat sources 24, 25, and 26 are provided downstream of the air blowers 1, 22, and 23 and heat the air passing therethrough.
7 is controlled. Control device 27
Is input from the rotary encoder 28 the rotation speed of the sticking drum 4, whereby the control device 27 changes the rotation speed of the rotary encoder 28 according to the preset data in conjunction with the change of the rotation speed. Each blower 2
The air flow rates of 1, 22, and 23 are increased or decreased. The control device 27 receives the surface temperature of the sticking drum 4 from the non-contact type temperature sensor 15 provided close to the sticking drum 4.
When the surface temperature of the sticking drum 4 is out of a predetermined allowable range, the air flow rate of each blower 21, 22, 23 is increased or decreased accordingly to correct the surface temperature within the allowable range. I have.

As shown in FIGS. 2 and 3, in this embodiment, in order to heat the sticking drum 4 from the inside, the drum portion 30 of the sticking drum 4 is provided above and separated from the frame 2. Specifically, a cylindrical support member 31 fixed to the frame 2 in the vertical direction, a drive shaft 32 rotatably supported in the support member 31, and an upper end of the drive shaft 32 are integrally formed. A disk 33 to be connected, an L-shaped cross section drum unit 30 integrally connected to the disk 33, and a pad 34 made of silicon rubber or the like fitted on the outer peripheral surface of the drum unit 30 are provided. The gap between the lower end of the drum section 30 and the frame 2 is enlarged, and the pipe 20 of the second heating means 16 is penetrated at a position relatively above the gap. As a result, a sufficient gap is formed between the pipe 20 heated by the hot air passing therethrough and the frame 2, thereby preventing the heat of the pipe 20 from heating the frame 2.

Next, a description will be given of a partition wall which forms a space into which hot air is introduced between the inner peripheral surface of the drum portion 30 and the inner peripheral surface of the drum portion 30 in order to efficiently heat the inner peripheral surface of the cylindrical drum portion 30.
That is, a horizontal lower partition 37 that is disposed and fixed upwardly separated from the frame 2 via a plurality of brackets 36 as support members provided at equal intervals, and the lower partition 3
7 has its lower end connected to the outer peripheral portion and extends vertically upward, and its upper end is close to the lower end surface of the drum portion 30, and its lower end is connected to the inner peripheral portion of the lower partition 37. An inner partition wall 39 extending vertically upward and having an upper end close to the top surface of the drum unit 30; an upper partition wall 40 connected to the upper end of the inner partition wall 39 and extending radially outward; To 40, and a side partition 41 connected to both ends of the drum unit 30. Each of the partitions 37, 38, 39, and 40 is formed in an arc shape along the inner peripheral surface of the drum unit 30. Drum section 30
And an inner peripheral surface thereof forms an arc-shaped space. Then, the pipe 20 is connected to an outer partition wall facing the outside from the gap between the lower end surface of the drum portion 30 and the frame 2, and is inserted into the space through an inlet 42 formed at a position where the pipe 20 is connected. Hot air can be supplied, and the hot air supplied into the space is supplied to the drum unit 3.
0 is released to the outside through a gap between the lower end face of the outer wall and the outer partition wall. Thus, the drum portion 30 can be heated from the near side of the supply position A to the sticking position B by the arc-shaped space into which the hot air is introduced. The bracket 36 is formed of a material having a low thermal conductivity, thereby preventing the heat of the heated lower partition wall 37 from being transmitted to the frame 2 via the bracket 36. The first heating means 11 and 12 are connected to general outlets 43 and 44 at the ends of pipes 18 and 19, respectively.
The hot air is diffused by 3 and 44 and blown to the outer peripheral surface of the drum unit 30 to heat it. The inner wall portion 38 is provided with an arc-shaped cover 45 whose lower end is adjacent to the frame 2 and whose upper end is adjacent to the lower end surface of the drum portion 30. The hot air discharged to the outside from the space 38 or the hot air discharged from the first heating means 11 and 12 is
7 and the frame 2 are prevented from flowing into the sticking drum 4 and the inner wall portion 38 and the drum portion 3
The hot air is prevented from flowing into the sticking drum 4 from the gap with zero. This prevents hot air from being trapped in the sticking drum 4, thereby preventing the driving portion of the sticking drum 4 from being heated.

According to the label sticking apparatus 1 having the above-described configuration, since the hot air having high heating efficiency is used for both the first heating means 11 and 12 and the second heating means 16, production is performed after the switch is turned on. In addition to shortening the warm-up time until the start-up, the processing capability can be improved. On the other hand, in the conventional label sticking apparatus, hot air having high heating efficiency was used for the first heating means, but a heater or a heat medium was used as the second heating means. However, even if the second heating means is configured using a heater or a heating medium, the configuration is complicated, and the cost is high, but the heating efficiency is low. However, according to this embodiment, the hot air having high heating efficiency is blown onto the inner peripheral surface of the drum unit 30 to heat the drum unit 30. Ability can be improved.

FIG. 4 shows a second embodiment of the present invention. In the first embodiment, a lower partition 37, an outer partition 38, an inner partition 39, an upper partition 40, a side partition 41 and a drum 41 are shown. Although the hot air is supplied into the space formed by the inner peripheral surface of the unit 30 to effectively heat the inner peripheral surface of the drum unit 30, the drum unit 130 can be efficiently configured with a simpler configuration in this embodiment. It is configured so that it can be heated. That is, the lower end surface of the drum portion 130 is
2 and adjacent to the inside of the drum section 130,
The arc-shaped inner partition 139 is directly connected and fixed to the frame 102. An upper partition 140 extending radially outward is connected to the upper end of the inner partition 139, and side partitions 141 extending radially outward are connected to both ends thereof. As a result, the inner partition 139 and the upper partition 14
0, an arc-shaped space is formed by the side partition wall 141 and the inner peripheral surface of the drum unit 130. In this embodiment having no outer partition, the end of the pipe 120 is
And a hot air is supplied into the space from an inlet 142 formed in the frame 102. The configuration other than the configuration described above is configured in the same manner as in the first embodiment, and the same members as those in the first embodiment include “10
A code with “0” added. The second of such a configuration
It is apparent that the same effects as those of the first embodiment can be obtained in the embodiment.

In the first and second embodiments, each partition (excluding the side partition) is formed in an arc shape, and the space is formed in an arc shape. However, the present invention is not limited to this. Alternatively, the partition may be formed in an annular shape and the space may be continuous in the circumferential direction, but in such a case, the side partitions 41 and 141 need not be provided. Alternatively, only the cylindrical outer partition may be connected and fixed to the frame to form a space inside the outer partition and the inner peripheral surface of the drum portion. further,
Although two first heating means 11 and 12 are provided, the present invention is not limited to this, and may be changed as appropriate according to the processing capacity and the size of the sticking drum.

[0015]

As described above, according to the present invention, it is possible to obtain an effect that the processing capacity can be improved with a simple and inexpensive configuration as compared with the conventional label sticking apparatus.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view of the label sticking apparatus 1.

FIG. 3 is an enlarged sectional view of an outer peripheral portion of the attaching drum 4.

FIG. 4 is an enlarged sectional view of a main part showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Label sticking apparatus 2 ... Frame 4, 104 ... Sticking drum 11, 12 ... 1st heating means 16, 106 ... 2nd heating means 30, 130 ... Drum part 37 ... Lower partition 38 ... Outer partition 39, 139 ... Inner partition 40, 140 ... upper partition 41, 141 ... side partition 42, 142 ... introduction port

Claims (6)

[Claims] 1. A sticking drum that is rotatably provided on a frame to convey a label with an adhesive surface facing outward and sticks the label to a container; and a sticking drum provided on a frame and conveyed by the sticking drum. And a heating means for heating the adhesive surface of the label to be activated to activate the adhesive, wherein the sticking drum is constituted by a hollow cylindrical member, and the heating means is provided by a sticking drum. A label sticking device comprising: a first heating means for blowing hot air to an outer peripheral surface to heat the same; and a second heating means for blowing hot air to an inner peripheral surface of the sticking drum to heat the same. 2. A lower end face of the sticking drum is spaced apart from a frame below the sticking drum, and an outer partition is provided in a gap between the lower end face of the sticking drum and the frame. 2. The label sticking apparatus according to claim 1, wherein the second heating unit supplies hot air from the outside to the inside of the sticking drum through an inlet formed in the outer partition. 3. 3. A lower end surface of the sticking drum is disposed adjacent to a frame below the sticking drum, and the second heating means applies hot air to the inside of the sticking drum from below through an inlet formed in the frame. The label sticking apparatus according to claim 1, wherein the label is supplied. 4. A space formed between the inner partition and the inner peripheral surface of the attaching drum, wherein an inner partition wall is provided inside the attaching drum along the inner peripheral surface of the attaching drum. The label sticking apparatus according to any one of claims 1 to 3, wherein hot air is supplied into the inside. 5. The label sticking apparatus according to claim 4, wherein the inner partition wall has an upper partition wall extending radially outward from an upper portion thereof along a top surface of the sticking drum. 6. The outer partition and the inner partition are connected to each other at a lower portion by a lower partition extending in a radial direction, and each partition is separated from a frame below the partition by a support member. The label sticking apparatus according to claim 4 or claim 5, wherein