JPH0612312U - Thermal label heating mechanism - Google Patents

Abstract

(57) [Summary] [Object] The present invention is for a labeling machine using a heat-sensitive label to heat the label held on the outer periphery of the conveying drum and transferred by hot air to activate the glue applied to the label. It relates to a heating mechanism. [Structure] A hot air blowing member having a blowing hole provided in the vicinity of the outer periphery of a conveying drum for transferring a label, and a hot air heater for blowing hot air to the hot air blowing member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heating mechanism for heating a label held on the outer periphery of a conveyance drum and transferred by hot air in a labeling machine using a heat-sensitive label to activate the glue applied to the label.

[0002]

[Prior art]

 Conventionally, in a labeling machine that uses a heat-sensitive label, a hot air heater that blows air to the heater section and discharges hot air is attached to activate the glue applied to the label, and the label is carried by a transport drum. The label was heated by blowing hot air directly with a hot air heater to activate the paste. In addition, since the hot air heater requires time from energization to reaching the set temperature, when the container is not temporarily sent to the labeling machine and the label is not transferred, the hot air heater is the conventional example 1 and the hot air is hot air. The method of separating the heater from the transport drum was used. Further, as Conventional Example 2, the amount of air blown to the hot air heater is reduced and the heater voltage is lowered to lower the temperature of the heater to prevent overheating of the conveying drum and to prevent the hot air heater from overheating. It was preventing overheating.

[0003]

[Problems to be solved by the device]

 This had the following drawbacks. In the conventional mechanism, the label carried by the transport drum is heated by blowing hot air directly from the hot air heater, so that the hot air does not diffuse around the transport drum, or locally. Since the hot air was strong, the heat of the hot air could not be efficiently transmitted to the label throughout the label. Further, in the standby state in which the label is not further transferred, in the method of separating the hot air heater from the transport drum in Conventional Example 1, the hot air heater is separated from the transport drum and discharged from the hot air heater. Since the hot air was emitted into the atmosphere as it was, the temperature around the labeling machine rose sharply, deteriorating the working environment, and wasting power. Further, in the method of weakening the air volume in the standby state of Conventional Example 2, the air volume supplied to the hot air heater is extremely reduced in order not to overheat the conveying drum, and the overheating of the hot air heater is prevented. In order to prevent overheating of the transport drum, the heater voltage was lowered to lower the heater temperature. Therefore, when the label is supplied again, the temperature of the heater will not rise in time, so it was necessary to wait for the temperature to rise during low-speed operation and then perform constant-speed operation after the temperature rose.

[0004]

[Means for solving the problem]

 The means of claim 1 comprises a hot air blowing member having blowing holes provided in the vicinity of the outer periphery of the conveying drum for transferring the label, and a hot air heater for blowing hot air into the hot air blowing member. According to a second aspect of the present invention, the hot-air blowing member includes a hot-air blowing member having blow-out holes provided near the outer periphery of a conveying drum for transferring the label, and a hot-air heater for blowing hot air into the hot-air blowing member. A ventilation hole communicating with the ventilation hole and a ventilation hole for heating the hot air blowing member are provided to move the hot air heater or move the hot air blowing member.

[0005]

[Action]

 In the mechanism of the means of claim 1, hot air is blown from the hot air heater to the hot air blowing member, and the hot air blown through is passed through the ventilation holes and is supplied to the blowing holes directed toward the conveying drum to blow hot air. The front surface of the member is held on the outer circumference of the conveying drum and hot air is blown to the label to be transferred. When the label is not transferred, the air volume supplied to the hot air heater is reduced to an appropriate amount, and the heater voltage is lowered to prevent overheating of the hot air heater as the air volume decreases. While lowering the temperature of the heater to an appropriate temperature, continue supplying hot air and wait. In the case of the mechanism of the means of claim 2, when the label is transferred, hot air is blown into the ventilation hole communicating with the blowing hole of the hot air blowing member by the hot air heater. When the label is not transferred further, the amount of air supplied to the hot air heater is reduced to an appropriate amount, and the heater voltage is further lowered to lower the heater temperature to an appropriate temperature while heating the hot air blowing member. The hot air is blown into the ventilation holes to do so, and the hot air blowing part is heated and stands by.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a perspective view of the hot air blowing member 1 and the hot air heater-2. The hot-air blowing member 1 is provided with ventilation holes 11 for blowing hot air from the hot-air heater, and a number of blowing holes 12 communicating with the ventilation holes 11 and blowing hot air are provided. FIG. 2 shows a conveying drum 3 which holds and conveys the label 4 on the outer periphery, a hot air blowing member 1 mounted with a slight gap provided on the outer periphery so that the blowing hole 12 side faces the conveying drum 3 side. The plan view shows the arrangement of the hot air heater-2 for blowing hot air into the ventilation holes 11 or 13 of the hot air blowing member 1.

FIG. 3 shows a sectional view of the hot-air blowing member 1 according to claim 2, and FIG. 4 shows a sectional view taken along the line AA ′ of FIG. As shown in FIG. 3, the hot air blowing member 1 is provided with ventilation holes 11 and 13, and the ventilation hole 11 communicates with the blowing hole 12, and the ventilation hole 13 is formed inside the hot air blowing member 1 as shown in FIG. It circulates and communicates with the atmosphere. Therefore, when hot air is blown into the ventilation hole 11 by the hot air heater-2, the hot air is blown from the blowout hole 12 toward the outer periphery of the transport drum 3. Next, when hot air is blown into the ventilation hole 13 by the hot air heater-2, the hot air circulates from the ventilation hole 13 to 13a and 13b and is discharged to the atmosphere through the exhaust port 13c. During the circulation, the hot air blowing member 1 is heated and its temperature rises to accumulate heat, so that the hot air is not blown to the conveying drum 3 side. Therefore, while the container is continuously supplied to the labeling machine and the supply of the label 4 continues, the hot air is blown into the ventilation hole 11, blown out from the blowing hole 12, and is blown to the label 4 which is held on the outer periphery of the conveying drum 3 and transferred. , Activate the glue applied to label 4. The label 4 in which the glue is activated is sent to the container transport mechanism and attached to the container. Next, when the supply of the container to the labeling machine is cut off and the label 4 is not supplied, the amount of air supplied to the hot air heater-2 and the supply voltage of the heater are lowered, and the hot air is blown into the ventilation hole 13 to generate hot air. Circulates from the ventilation holes 13 to 13a and 13b and heats the hot air blowing member 1 while being discharged from the exhaust port 13c to store heat. Next, at the same time when the supply of the label 4 is started again, the blowing of the hot air is switched to the ventilation hole 11 and the hot air is supplied by returning the voltage and the air volume supplied to the hot air heater to the original. The temperature of the hot air discharged from the tank does not rise directly. However, due to the heat accumulated in the hot air blowing member 1, hot air close to the optimum temperature can be quickly blown from the blowing holes 12.

In order to switch the blowing of the hot air to the ventilation hole 11 or the ventilation hole 13, a sliding mechanism that moves with an air cylinder or the like is provided, and the sliding mechanism has a hot air heater-2 or a hot air blowing mechanism. Either of the blowing members 1 is attached and the hot air heater-2 is moved or the hot air blowing member 1 is moved. Further, by forming the hot air blowing member 1 into a shape as shown in FIG. 5, the flow of the hot air blown out from the blowing hole 12 becomes the same direction as the moving direction of the label 4 by the rotation of the transporting drum 3, and the efficiency is further improved. The label 4 can be heated. A large elongated hole or the like may be used as the shape of the blowing hole 12.

[0009]

[Effect of device]

 According to the present invention, the hot air for heating the label 4 can be concentrated and blown on the label 4 by using the hot air blowing member 1, and the entire surface of the label 4 can be uniformly blown and heated. Less hot air than the mechanism can be used without waste, and since the blowout holes 12 can be provided in a long distance in the rotation direction of the transport drum 3, a longer heating time can be obtained, and the label 4 can be heated at a lower temperature and a smaller air volume than the conventional method. It is possible to uniformly activate the glue applied to the. Further, during the standby time when the supply of the label 4 is stopped, the amount of air supplied to the hot air heater-2 and the supply voltage of the heater are lowered to heat the hot air blowing member 1 by the hot air to waste heat. By storing the hot air in the hot air blowing member 1 without supplying the hot air, the hot air can be quickly blown out of the hot air blower 12 even if the temperature of the hot air heater does not reach the optimum temperature when the label 4 is supplied again. Therefore, the hot air can be effectively used without being scattered over the surroundings, the power is not wasted, and the working environment around the labeling machine is not adversely affected.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a plan view showing the arrangement of the present invention.

FIG. 3 is a cross-sectional view of the hot air blowing member 1.

FIG. 4 is a sectional view of the hot air blowing member 1.

[Figure 5]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot-air blowing member 2 Hot-air generator 3 Conveying drum 4 Label 5 Label hopper-11 Ventilation hole 12 Blow-out hole 13 Ventilation hole

Claims (2)

[Scope of utility model registration request] 1. In a labeling machine using a heat-sensitive label, a hot-air blowing member having an air-blowing hole adjacent to the outer periphery of a conveying drum for holding and transferring the heat-sensitive label on the outer periphery and having a blowing hole for ejecting hot air in the outer peripheral direction of the conveying drum, A heat-sensitive label heating mechanism configured to heat a heat-sensitive label being transferred, which is composed of a hot-air heater that blows hot air onto the hot-air blowing member. 2. The heat-sensitive label heating mechanism according to claim 1, comprising a ventilation hole communicating with the blowing hole of the hot air blowing member and a hot air heater for blowing hot air into the ventilation hole for heating the hot air blowing member.