JP2909968B2 - Labeling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a labeling machine for applying a thermal label.

[0002]

2. Description of the Related Art A heat-sensitive label in which a heat-sensitive glue material is applied to a label attaching surface is known. A labeling machine for sticking this kind of label is provided with various heating means for applying heat by applying heat immediately before sticking the label.

[0003] The applicant has previously proposed to arrange a hot air generator around the sticking drum and blow hot air toward the sticking surface of the thermal label passing through the hot air generator.

As another heating means for the label, a method is also known in which a heater is embedded near the surface layer of the sticking drum, and the label is heated while the negative label is suctioned and transferred on the peripheral surface of the sticking drum. .

[0005]

When a production line for medicines and foods and a label sticking line are continuous, it is necessary to minimize air movement accompanying label sticking from the viewpoint of quality maintenance and hygiene. There is. When sticking a heat-sensitive label in such an environment, it is difficult to adopt a labeling machine equipped with the above-described hot air generator because the labeling machine involves movement and stirring of air.

[0006] Further, the labeling machine machine in which a heater is built in the sticking drum has the following problems.

Heating is performed from the opposite side (front side) of the label sticking surface, so that the heating efficiency is poor and an unbonded portion is generated. Because the heat of the heater is easily transmitted to the entire sticking drum,
The sliding part between the bearing and the negative pressure suction device made of resin is severely worn or damaged, and there is a problem in durability. Immediately after the start of the operation of the machine or when the heating temperature of the sticking drum is changed, it takes time for the sticking drum to reach a predetermined temperature, during which time is a waiting time, and the label cannot be stuck. The sticking drum with a built-in heater takes a long time to adjust the heating temperature and it is difficult to cope with a rapid temperature change, so that there is a limit in increasing the operating speed.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a labeling machine capable of suppressing the movement of air and maintaining a good working environment. Still another object of the present invention is to provide a labeling machine capable of efficiently heating a thermosensitive label with little heat energy.

[0009]

[Means for Solving the Problems]

According to the first aspect of the present invention, while adsorbing the non-adhesive surface side of the label to the peripheral surface of the negative pressure suction type attaching drum, the container encounters the container approaching from the tangential direction of the attaching drum and contacts the peripheral surface of the container. In a labeling machine that attaches a thermal label,
A heating unit that generates heat toward the drum peripheral surface is arranged around the attaching drum, and the surface of the peripheral surface of the attaching drum is covered with a heat storage layer via a heat insulating layer, and the heat storage layer stores heat energy of the heating unit. The heat-sensitive label and the heat storage layer of the sticking drum heat both sides of the heat-sensitive label.

According to a second aspect of the present invention, in the labeling machine according to the first aspect, the heating means is a windless light source whose calorific value changes according to an applied voltage.

According to a third aspect of the present invention, in the labeling machine according to the first or second aspect, the heating means is configured to be able to advance and retreat so as to retreat when the machine stops.

According to a fourth aspect of the present invention, in the labeling machine according to the first or second aspect, the controller for controlling the voltage applied to the heating means is electrically connected to the machine driving unit, and the controller is configured to control the machine. It is characterized in that the applied voltage of the heating means is controlled in accordance with the operation speed of the heating means.

[0014]

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<1> Basic Configuration of Labeling Machine FIG. 1 shows an example of a partially omitted labeling machine.
Numeral 1 denotes a container for accommodating chemicals and the like, which is conveyed toward the sticking drum 4 by a screw conveyor 3 arranged on the side of the carry-in path 2 on the right side of the drawing. A star 5 having a large number of accommodating portions on its peripheral surface is rotatably arranged at a position facing the sticking drum 4 with a passage therebetween, and supplies the container 1 in the carry-in path 2 toward the sticking drum 4 at a constant interval. I do.

A sponge sticking curved wall 6 is provided around the sticking drum 4 over the label sticking range, so that the container 1 can be forcibly rotated between the sticking drum 4 and the surroundings. ing.

On both sides of the discharge path 7 on the downstream side, discharge belts 8, 8 are provided.

The sticking drum 4 is a drum that rotates about a vertical rotating shaft 9 and its detailed structure will be described later.

The transfer drum 10 is a known negative pressure suction type drum which generates a negative pressure on the circumferential surface thereof over the label conveying section, and is disposed close to the sticking drum 4.

A heat-sensitive label (not shown) is sequentially supplied to the transfer drum 10, adsorbed on the circumferential surface of the transfer drum 10 and transferred, and the negative pressure is cut off at the position closest to the circumferential surface of the sticking drum 4, and the circle of the sticking drum 4 is cut off. It is handed over to the surrounding surface.

The heat-sensitive label supply means includes a heat-sensitive label cut into a predetermined size in a holder, and the heat-sensitive label is supplied to the transfer drum 10 one by one, or a tape drawn from a roll body. May be any of a roll type for supplying the transfer drum 10 while cutting the same to a predetermined size.

<2> Sticking Drum FIG. 2 is a cross-sectional view of the circumferential portion of the sticking drum 4. A large number of chambers 12 are formed on the lower surface side of the disc-shaped drum main body 11,
The circumferential surface of the drum body 11 communicates with each chamber 12 and
3 are provided.

On the lower side of the drum body 11, the chamber 12
A closed disk 15 having a plurality of through holes 14 communicating therewith is integrally attached, and the through holes 14, the chambers 12, and the micro holes 13 are provided.
Are connected to each other.

On the lower surface side of the closing disk 15, a fixed disk 17 in which an arc groove 16 is formed over the conveying range A in FIG. The fixed disk 17 is fixed in sliding contact with the lower surface of the closing disk 15 and is made of a known material having excellent wear resistance and heat resistance. Arc groove 1 of fixed disk 17
Numeral 6 is formed so as to correspond to the locus of the through-hole 14, so that a negative pressure is generated in the group of fine holes 13 passing directly above the arc groove 16. The negative pressure suction structure of the label is not limited to the above-described embodiment, and it is needless to say that a known structure can be applied.

One of the features of the labeling machine according to the present invention is that the surface of the drum main body 11 is covered with the heat storage layer 19 with the heat insulating layer 18 interposed therebetween. The heat storage layer 19 is a metal material having excellent heat storage properties, for example, a copper plate is preferable. Further, as the heat insulating layer 18, for example, a material having a known heat insulating property can be used in addition to a material obtained by subjecting the surface of the plate to Teflon (registered trademark) processing. Micro holes 20 and 21 are formed in the heat insulating layer 18 and the heat storage layer 19 at positions corresponding to the micro holes 13.

<3> Heating Means As shown in FIG. 1, the heating means 22 for the heat-sensitive label is arranged to face the sticking drum 4, and is configured to be able to advance and retreat with respect to the peripheral surface of the sticking drum 4 via a cylinder 27 and the like. ing. The cylinder 27 is for retreating the heating means when the operation of the machine is stopped, and a known reciprocating mechanism such as a gear mechanism can be applied.

The heating means includes a light source 23 as shown in FIG.
It comprises a ceramic reflector 24 arranged to surround the light source 23. The light source 23 is a tube 25
A quartz oscillator 26 is interpolated between them, and infrared rays are generated by applying a voltage to the quartz (quartz or quartz) oscillator 26, and the heat generation temperature changes in proportion to the applied voltage. 5 in a short time by applying
It is possible to reach temperatures as high as 00 ° C. Light source 23
The heat source is not limited to the infrared type described above, and may be any heat source that does not move air and can adjust a high heat temperature by an applied voltage.

The reflection member 24 is formed by opening only the surface facing the sticking drum 4 so that it can radiate toward the peripheral surface of the sticking drum 4. In FIG. 3, reference numeral 30 denotes a thermal label, and 31 denotes a floor plate.

<4> Means for Automatically Adjusting Heating Temperature As shown in FIG. 1, the drive unit 29 of the labeling machine and the controller 28 for controlling the voltage applied to the light source 23 of the heating means 22 are electrically connected to each other. When the signal of the operating speed of the machine can be input to the controller 28, the controller 28 can adjust the applied voltage of the light source 23 according to the operating speed of the machine.

This is because when the operation speed of the labeling machine is changed, the heating temperature is automatically changed to the optimum heating temperature at which the adhesive softens according to the speed at which the heat-sensitive label passes.
This can be easily realized by computer control.

It is also possible to automatically control the heating temperature of the heat-sensitive label by linking the advance / retreat control of the cylinder 27 with the operating speed of the labeling machine and changing the distance between the heating means 22 and the sticking drum 4. is there.

[0032]

Next, a method for attaching a thermal label will be described.

In FIG. 1, the thermal label is a transfer drum 1
The transfer surface 10 is transferred to the application drum 4 from the transfer drum 10 at a position closest to the peripheral surface of the application drum 4. The heat-sensitive label has its non-adhesive surface adsorbed on the peripheral surface of the sticking drum 4 and is transferred toward the container 1.

On the other hand, the heating means 22 is advanced so as to be close to the peripheral surface of the sticking drum 4, and receives a voltage applied from the controller 28, and emits high heat light from the light source 23 to the peripheral surface of the sticking drum 4. Have been Unlike traditional hot air,
By employing a calm light source 23 for the heating means 22, there is no fear of disturbing the surrounding air.

As shown in FIG. 3, the peripheral surface of the sticking drum 4 is heated by the heating means 22. The heat storage layer 19 on the surface of the sticking drum 4 is indirectly heated through the heat-sensitive label 30 and a portion exposed between the heat-sensitive labels 30 is heated directly to a predetermined temperature. Heat is stored.

The heat sensitive label 30 has been indirectly heated by the heat storage layer 19 from the time it was delivered to the sticking drum 4, and the adhesive surface thereof was directly heated when passing through the heating means 22. That is, the heat-sensitive label 30 is not heated on both sides for a moment passing through the heating means 22, but is continuously heated over the transfer section of the attaching drum 4.
The adhesive surface is heated directly for a moment when it passes through. Therefore, by the cooperation of the heating means 22 and the heat storage layer 19 located on both sides of the heat sensitive label 30, not only can the adhesive surface of the heat sensitive label 30 be efficiently heated, but also the heat storage layer 19 can be heated.
By storing heat in the heating means 22, the heating means 22 does not need to incorporate a heat generating means, and heat energy can be effectively used for imparting adhesiveness.

During operation of the machine, the heat storage layer 1 of the sticking drum 4
The heat is stored in the heat insulating layer 9, but effectively prevents the heat insulating layer 18 from conducting heat to the drum main body 11.

As described above, the label heated by the heating means 22 meets the container 1 supplied by the star 5 in FIG. 1 and is affixed to the peripheral surface thereof.

[0039]

Other Embodiments In the first embodiment described above, the case where a non-wind heat source is used for the heating means 22 has been described, but a known hot air blowing type may be used. Also in this example, the provision of the heat storage function to the attaching drum 4 is the same as in the above-described embodiment.

[0040]

According to the present invention, the following specific effects can be obtained. <A> By combining the heat storage layer formed on the surface layer of the sticking drum with the heating means, both sides of the heat-sensitive label can be efficiently heated.

<B> By employing a calm light source as the heating means, there is no need to worry about disturbing the surrounding air, and it is possible to use the apparatus in an environment where the movement of air such as medicines and foods is not desired.

<C> Since the heating temperature can be rapidly increased in a short time, the waiting time until the operation of the machine is started can be reduced.

<D> Since the non-adhesive surface side of the thermal label is continuously heated over the transfer section of the sticking drum, the heating temperature of the heating means for heating the adhesive surface of the thermal label is set lower by that amount. it can.

<E> Since the heat storage layer of the sticking drum can be heated using the heat energy of the heating means without incorporating a heating device such as a heater, the heat energy by the heating means can be effectively utilized.

<F> By associating the controller for controlling the voltage applied to the light source of the heating means with the driving unit of the machine, it is possible to adjust the heating temperature to an optimum value according to the operating speed of the machine.

<G> From the above reasons, the operating speed of the machine can be increased.

<H> By interposing a heat insulating layer between the drum main body of the sticking drum and the heat storage layer, the drum main body side can be prevented from being excessively heated, and can slide with a bearing or a resin-made negative pressure suction device. Moving parts can be protected from wear and damage, and durability is improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a labeling machine according to the present invention, a part of which is omitted.

FIG. 2 is a sectional view of a circumferential portion of the sticking drum.

FIG. 3 is a cross-sectional view of the circumference of the sticking drum and the heating means when the thermal label is heated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thermal label 2 Carry-in path 3 Screw conveyor 4 Sticking drum 5 Star 6 Sticking curved wall 7 Carry-out path 8,8 Carry-out belt 9 Rotating shaft 10 Transfer drum 11 Drum main body 12 Room 13 Micro hole 14 Through hole 15 Closed disk 16 Arc groove 17 Fixed disk 18 Heat insulation layer 19 Heat storage layer 20, 21 Micropore 22 Heating means 23 Light source 24 Reflector 25 Tube 26 Quartz oscillator 27 Cylinder

Claims (4)

(57) [Claims] 1. A labeling device for adhering a non-adhesive side of a label to a peripheral surface of a negative pressure suction type attaching drum, and a container which comes into contact with the tangential direction of the attaching drum when a thermal label is attached to the peripheral surface of the container. In the machine, a heating means for generating heat toward the drum peripheral surface is arranged around the sticking drum, and the surface of the peripheral surface of the sticking drum is covered with a heat storage layer via a heat insulating layer. A labeling machine, wherein energy is stored, and both sides of the heat-sensitive label are heated by the heating means and the heat storage layer of the sticking drum. 2. The labeling machine according to claim 1, wherein the heating means is a windless light source whose calorific value changes according to an applied voltage. 3. The labeling machine according to claim 1, wherein the heating means is configured to be able to advance and retreat so as to retreat when the machine stops. 4. The labeling machine according to claim 1, wherein a controller for controlling a voltage applied to the heating means and a machine driving unit are electrically connected, and the controller corresponds to the operating speed of the machine. A labeling machine characterized by controlling an applied voltage of a heating means by heating.