JP2019210028A - Label heating device - Google Patents

Abstract

To provide a label heating device capable of attaching labels that have been unsuitable to conventional hot wind tunnel type label heating devices, while guaranteeing attachment performance of labels that have been excellently attached via hot wind, furthermore, with no need to additionally install some mechanism for removing mist around an attachment object.SOLUTION: A label heating device 100 is used for blowing hot wind to a label L arranged to cover an attachment object X in order to attach the label L to the attachment object X. The label heating device comprises: a heating chamber 30 for supplying the hot wind upon entry or exit of the attachment object X; and a vapor supply mechanism 50 configured to supply vapor to the heating chamber 30 as well as to be able to change a supply amount of the vapor.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a so-called hot air tunnel type label heating apparatus and a steam supply mechanism used in the label heating apparatus.

  As shown in Patent Document 1, the hot air tunnel type label heating device is configured to supply hot air to a heating chamber into which an object to be loaded is carried, and to heat-shrink the label with the hot air and attach the label to the object to be mounted. Has been.

  Such a heating device is suitable for mounting, for example, a paper label with glue, but when applied to mounting of a label with a perforation, for example, the perforation is repelled by the thermal contraction of the label, and this kind of label It is not suitable for wearing.

  On the other hand, a so-called steam tunnel type device is known as a device that can be attached with a perforated label. However, in this method, since the label is heated by steam, for example, a paper label with glue or the like cannot be mounted. Accordingly, in the hot air tunnel type label heating apparatus, there is a problem that it is impossible to attach a label that has been originally attached by hot air, simply by using steam.

  In addition, since the mist adheres to the attached object after the label is mounted in the steam tunnel type apparatus, it is necessary to provide a separate mechanism (for example, a dryer) for removing the attached mist, and the entire apparatus is large and expensive. It becomes something.

Japanese Patent No. 5990723

  Therefore, the present invention has been made to solve the above-mentioned problems all at once, and while being able to attach a label that is not suitable for a hot-air tunnel type label heating device so far, it can be attached by hot air. The main object of the present invention is to provide a label heating device that guarantees the label mounting performance and does not require a separate mechanism for removing mist adhering to the mounted object.

  That is, the label heating apparatus according to the present invention is a label heating apparatus for blowing hot air onto a label covered with an attachment to attach the label to the attachment, and the attachment is carried in / out. A heating chamber to which hot air is supplied and a steam supply mechanism configured to supply steam to the heating chamber and to change the supply amount of the steam are provided.

With such a label heating device, the steam supply mechanism is configured to be able to control the amount of steam supplied. For example, by supplying steam when a perforated label is attached, a conventional hot air tunnel A label that is not suitable for the type of label heating apparatus can be attached. Moreover, for example, by stopping the supply of steam when a paper label with glue is attached, it is possible to ensure the performance of attaching the label that has been attached by hot air. Therefore, the label heating device configured as described above is a hybrid device in which the hot air tunnel type and the steam tunnel type are combined.
In addition, a mechanism for removing the mist adhering to the attachment by adjusting the vapor supply amount by the vapor supply mechanism so that the mist adhering to the attachment after the label is attached immediately evaporates. It is not necessary, and the overall size and cost of the apparatus can be suppressed.

It is preferable that the steam supply mechanism supplies superheated steam to the heating chamber.
With such a configuration, it is possible to evaporate the mist adhering to the mounted object after the label is mounted faster than when supplying steam at a temperature lower than the superheated steam.

  As a specific configuration for combining the hot-air tunnel type and the steam tunnel type, the steam supply mechanism supplies the steam to the heating chamber and stops supplying the steam. It is preferable to be configured to be switchable to a stopped state.

  As a specific embodiment, there is a configuration in which the steam supply mechanism controls the supply pressure of the steam supplied to the heating chamber to 0 Pa or more and 0.06 Pa or less.

It is preferable that the steam supply mechanism further includes a temperature adjustment unit that adjusts the temperature of the steam supplied to the heating chamber.
If it is such a structure, the temperature of a vapor | steam can be adjusted by the temperature control part to such an extent that the mist adhering to the to-be-attached object after label mounting will evaporate immediately, and the mist adhering to the to-be-attached object It is possible to eliminate the need for a mechanism for removing the.

  As a specific embodiment, there is a configuration in which the temperature adjustment unit adjusts the temperature of steam supplied to the heating chamber to 80 ° C. or more and 600 ° C. or less.

  As a configuration that exerts the above-described effects more remarkably, a second heating chamber that is provided upstream or downstream of the heating chamber in the transport path of the mounted object and that heats the label covered with the mounted object is provided. Further, there is a configuration in which the steam supply path supplies steam to both the heating chamber and the second heating chamber.

Further, the steam supply mechanism according to the present invention is used in a label heating apparatus for blowing hot air on a label coated on an attachment to attach the label to the attachment, and the attachment Is supplied and discharged, and steam is supplied to a heating chamber to which hot air is supplied, and the supply amount of the steam can be changed.
If such a steam supply mechanism is used, the same effect as the label heating apparatus mentioned above can be obtained.

  According to the present invention configured as described above, it is possible to attach a label that is not suitable for a hot air tunnel type label heating device so far, while ensuring the mounting performance of a label that has been mounted by hot air. In addition, it is possible to provide a label heating apparatus that does not require a separate mechanism for removing the mist attached to the attachment.

The schematic diagram which shows the whole structure of the label heating apparatus of this embodiment. The schematic diagram which shows the internal structure of the label heating apparatus of this embodiment. The schematic diagram which shows the structure of the preheating chamber of this embodiment. The schematic diagram which shows the structure of the heating chamber of this embodiment. The schematic diagram which shows the structure of the steam supply mechanism of this embodiment. The schematic diagram which shows the structure of the refinement | miniaturization area | region of the temperature control part of this embodiment.

  Below, one Embodiment of the label heating apparatus which concerns on this invention is described with reference to drawings.

<Device configuration>
The label heating apparatus 100 according to the present embodiment is used to heat a shrink label L (hereinafter simply referred to as a label L) that is covered with the attachment X and attach the label L to the attachment X. It is what In addition, the label L of this embodiment is a film which has heat shrinkability, such as resin. In addition, the attachment X is, for example, a resin, glass, or metal container, and here, a plastic bottle is taken as an example.

  As shown in FIG. 1, the label heating apparatus 100 includes a transport mechanism 10 that transports an attachment X covered with a label L, a preheating chamber 20 that preheats the label L, and a preheated label L. And a heating chamber 30 that is heated and mounted on the attachment X.

  The transport mechanism 10 includes a transport belt 11 such as an endless belt on which the mounted object X is placed, and a drive unit 12 such as a motor for moving the transport belt 11. It is provided so that X is conveyed linearly and the preheating chamber 20 and the heating chamber 30 are passed in this order.

  As shown in FIG. 2, the preheating chamber 20 includes a first housing 21 that is formed as a preheating space 2 </ b> S, and a preheating chamber heating mechanism 22 that generates hot air for heating the label L. .

  The first housing 21 has an opening for carrying in / out the attachment X formed on the side wall. Here, an opening is formed in each of the opposite side walls, the opening formed in the front wall 211 is the carry-in port 21a, and the opening formed in the rear wall 212 is the carry-out port 21b.

  The preheating chamber heating mechanism 22 heats the air supplied by, for example, a pressure feeding mechanism (not shown) to a high temperature, and specifically includes a heater 221 such as a finned cartridge heater. More specifically, as shown in FIG. 3, a supply space 2P to which pressurized air is supplied is provided above the preheating space 2S in the first housing 21, and the supply space 2P has a supply space 2P. A plurality of heaters 221 are arranged in a staggered pattern, for example.

  The high-temperature air heated by the preheating chamber heating mechanism 22 is sent into the preheating space 2 </ b> S from the air holes 21 h formed in the side wall of the first housing 21. More specifically, punching metal is provided, for example, on the inner wall surfaces of the left wall 213 and the right wall 214 facing each other in the direction orthogonal to the conveyance direction among the side walls of the first housing 21. Thus, a large number of air holes 21h are formed in the inner wall surfaces of the left wall 213 and the right wall 214, and high-temperature air is blown out as hot air from these air holes 21h.

  As shown in FIG. 2, the heating chamber 30 includes a second housing 31 formed as a heating space 3 </ b> S, and a heating chamber heating mechanism 32 that generates a high-temperature gas for further heating the label L. I have.

  The second housing 31 has an opening for carrying in / out the attachment X formed in the side wall, and is disposed adjacent to the first housing 21 here. That is, the front wall 311 of the second housing 31 faces the rear wall 212 of the first housing 21, and an opening formed in the front wall 311 is the carry-in entrance 31 a. Further, an opening formed in the rear wall 312 facing the front wall 311 of the second housing 31 is a carry-out port 31b.

  The heating chamber heating mechanism 32 heats the air supplied by, for example, a pressure feeding mechanism (not shown) to a high temperature, and specifically includes a heater 321 such as a finned cartridge heater. More specifically, as shown in FIG. 4, a supply space 3P to which pressurized air is supplied is provided above the heating space 3S in the second housing 31, and the supply space 3P is provided in the supply space 3P. A plurality of heaters 321 are arranged in a staggered pattern, for example.

  The high-temperature air heated by the heating chamber heating mechanism 32 is sent into the heating space 3 </ b> S from the vent 31 h formed in the side wall of the second housing 31. More specifically, a plurality of vent holes 31h are formed on the inner wall surfaces of the left wall 313 and the right wall 314 facing each other in the direction orthogonal to the conveyance direction among the side walls of the second casing 31. Hot air is blown out as hot air from these ventilation openings 31h. In addition, as shown in FIG. 2, the slit nozzle 4 which guides the hot air blown from the ventilation port 31h to the to-be-attached object X is provided in the both sides of the ventilation port 31h.

  However, as shown in FIGS. 2 and 5, the label heating apparatus of the present embodiment supplies steam to the preheating chamber 20 and the heating chamber 30, and a steam supply mechanism configured to change the supply amount of the steam. 50 is further provided.

  The steam supply mechanism 50 here supplies superheated steam to both the preheating chamber 20 and the heating chamber 30, and specifically, the above-described supply space 2P formed in the preheating chamber 20 and the heating chamber 30, Superheated steam is supplied to each of the 3Ps. In the present embodiment, superheated steam supplied from one path is supplied from one side across the conveyor belt 11 to the attachment X by supplying superheated steam from two paths to one supply space 2P, 3P. The superheated steam guided and supplied from the other path is guided to the article to be mounted X from the other side sandwiching the conveyor belt 11. However, steam may be supplied to one supply space 2P, 3P from one path or three or more paths.

  Specifically, as shown in FIG. 5, the steam supply mechanism 50 adjusts the temperature of steam supplied to the steam supply path 5 </ b> L connected to the preheating chamber 20 and the heating chamber 30, and the heating chamber 20 and the preheating chamber 30. A temperature control unit 51 and a supply amount control unit 52 that controls the supply amount of steam supplied to the heating chamber 20 and the preheating chamber 30 are provided.

The steam supply path 5L is connected to a steam generator (not shown) such as an electric boiler in which the introduction port 5La is provided outside the apparatus, and the outlet port 5Lb is a supply space 2P, 3P for each of the preheating chamber 20 and the heating chamber 30. For example, it is connected via a pipe member such as a silicon tube.
The steam supply path 5L of the present embodiment is branched into a plurality of branch channels on the way, and the outlet port 5Lb corresponding to each branch channel 5L1 is the supply space 2P of the preheating chamber 20 or the supply space of the heating chamber 30. Connected to 3P. Here, two derivation ports 5Lb are connected to the supply spaces 2P and 3P, but the number of derivation ports 5Lb to be connected is not limited to this.
Each branch flow path 5L1 is provided with an on-off valve V that can switch between supply and stop of steam. That is, the steam supply mechanism 50 according to this embodiment includes a supply state in which steam is supplied to the preheating chamber 20 and the heating chamber 30 by manually opening and closing the on-off valve V, and a stop state in which the supply of steam is stopped. It is configured to be switchable. Further, in the supply state, the steam can be supplied to both the preheating chamber 20 and the heating chamber 30, or the steam can be supplied to only one of the preheating chamber 20 and the heating chamber 30.

The temperature control unit 51 is provided in the steam supply path 5L, and the steam introduced into the steam supply path 5L is guided through the introduction port 5La, and heats the steam to a preset heating temperature. .
Specifically, the temperature control unit 51 is a tubular member in which an introduction port 51a and a lead-out port 51b are formed. In the internal space, a first heating region 5S1 for heating steam introduced from the introduction port 51a, a first heating A refined region 5S2 that refines the vapor that has passed through the region 5S1 and a second heating region 5S3 that heats the vapor that has passed through the refined region 5S2 and derives it from the outlet 51b are formed.

  The first heating area 5S1 is an area for heating the introduced steam to a first heating temperature set to, for example, 80 ° C. or more and 600 ° C. or less, and a heater such as a cartridge heater is provided. The first heating temperature is more preferably 130 ° C. or higher and 250 ° C. or lower. Here, the first heating temperature is set to 250 ° C. Thereby, in the first heating region, superheated steam is generated by heating the steam.

  The refined region 5S2 is a region that removes a relatively large mist while further miniaturizing the minute mist contained in the superheated steam, and is provided with a wall member 511 on which the superheated steam that has passed through the first heating region 5S1 collides. ing. When the superheated steam collides with the wall member 511, the mist contained in the superheated steam is refined, and the relatively large mist adheres to the wall member 511 and is removed. The mist adhering to the wall member 511 is discharged from a drain port (not shown) provided below the miniaturized region 5S2.

  The wall member 511 will be described in more detail. As shown in FIG. 6, a plurality of (here, seven) wall members 511 are provided from the upstream side to the downstream side of the miniaturized region 5S2, and these wall members 511 are provided. Are arranged so as to be orthogonal to the tube axis direction.

  The upstream side wall member 511a disposed on the upstream side of the miniaturized region 5S2 and the downstream side wall member 511b disposed on the downstream side are, for example, disk-shaped in which a large number of small holes h are formed. Each of the small holes h has a diameter of about several millimeters. Here, the small hole h formed in the downstream side wall member 511b is smaller than the small hole h formed in the upstream side wall member 511a, and the former is, for example, a circle having a diameter of 6 mm. The latter is, for example, a circular shape having a diameter of 3 mm.

  On the other hand, the inner wall member 511c disposed between the upstream side wall member 511a and the downstream side wall member 511b has, for example, a shape in which a part of a disk is cut out, and the cutout portion Z is a flow path for steam. It becomes. Here, a plurality of inner wall members 511c are arranged from upstream to downstream, and the notches Z of the adjacent inner wall members 511c are arranged so as to sandwich the tube axis when viewed from the axial direction. Yes. In other words, the plurality of inner wall members 511c are provided so that the cutout portions Z are arranged in a staggered manner from the upstream to the downstream, and steam (superheated steam) flows while meandering through the cutout portion Z. It is like that.

  The second heating area 5S3 is an area for heating the introduced steam to a second heating temperature set to, for example, 80 ° C. or more and 600 ° C. or less, and a heater such as a cartridge heater is provided. The second heating temperature is more preferably 130 ° C. or higher and 250 ° C. or lower. Here, the second heating temperature is set to the same temperature as the first heating temperature, that is, 250 ° C. In addition, by making 2nd heating temperature 130 degreeC or more, it can refine | miniaturize so that the mist contained in a vapor | steam cannot be visually observed. On the other hand, if the second heating temperature is higher than 250 ° C., the label L may be damaged.

As shown in FIG. 5, the supply amount control unit 52 controls the supply pressure of steam supplied to the preheating chamber 20 and the heating chamber 30, and is configured using a pressure regulating valve 5 </ b> V such as a pressure reducing valve. ing.
Specifically, the supply amount control unit 52 includes a primary side pressure regulating valve 5V1 provided in the steam supply path 5L, and a secondary side pressure regulating valve 5V2 provided downstream of the primary side pressure regulating valve 5V1 in the steam supply path 5L. Here, the primary side pressure regulating valve 5V1 is provided upstream of the temperature control unit 51, and the secondary side pressure control valve 5V2 is provided downstream of the temperature control unit 51.

  The primary pressure regulating valve 5V1 regulates the pressure of the steam flowing through the steam supply path 5L to 0 MPa or more and 0.4 MPa or less, and more preferably 0.1 MPa or more and 0.2 MPa or less.

  Further, the secondary pressure regulating valve 5V2 regulates the pressure of the steam flowing through the steam supply passage 5L to 0 MPa or more and 0.06 MPa or less, and more preferably 0.02 MPa or more and 0.04 MPa or less.

  The temperature control unit 51 and the supply amount control unit 52 described above can supply steam (superheated steam) having a predetermined set temperature to the preheating chamber 20 and the heating chamber 30 with a predetermined supply pressure.

<Effect of this embodiment>
According to the label heating apparatus 100 of the present embodiment, since the steam supply mechanism 50 configured to be able to control the supply amount of steam is provided, for example, when the perforated label is mounted, the preheating chamber 20 and the heating chamber 30 are provided. By supplying superheated steam, a label that is not suitable for a conventional hot-air tunnel type label heating device can be mounted.
In addition, by stopping the supply of steam to the preheating chamber 20 and the heating chamber 30, the mounting performance of, for example, a glued paper label that could be mounted by a conventional hot-air tunnel type label heating device is guaranteed. Therefore, a hybrid label heating apparatus in which a hot air tunnel type and a steam tunnel type are combined is provided.

  Further, since the steam supply mechanism 50 includes a supply amount control unit 52 that controls the supply amount of steam, the mist attached to the mounted object X after the label is mounted is immediately evaporated. It can be controlled to such an extent. Thereby, the mechanism for removing the mist adhering to the to-be-attached object X used with the vapor | steam tunnel type label heating apparatus is unnecessary, and the enlargement and cost increase of the whole apparatus can be suppressed.

  In addition, since the steam supply mechanism 50 includes the temperature control unit 51 that controls the temperature of the steam, the temperature of the steam is controlled to such an extent that the mist adhering to the mounted object X after the label is mounted immediately evaporates. can do. This also eliminates the need for a mechanism for removing the mist adhering to the attachment object X used in the steam tunnel type label heating apparatus, and can suppress increase in size and cost of the entire apparatus.

  Since the steam supply mechanism 50 supplies superheated steam to the preheating chamber 20 and the heating chamber 30, it is possible to evaporate the mist adhering to the mounted object X after label mounting faster than when supplying steam. .

  In addition, since the first heating region 5S1 is provided on the upstream side of the miniaturization region 5S2, the temperature control unit 51 heats the steam to a predetermined set temperature in the first heating region 5S1, and then the miniaturization region 5S2 The mist contained in the vapor can be further refined. Thereby, compared with the case where the mist contained in the steam before heating is refined, the mist can be made finer, and the mist adhering to the mounted object X after the label is mounted can be more reliably evaporated. .

  In addition, since the second heating region 5S3 is provided on the downstream side of the miniaturized region 5S2, even if the temperature of the steam is lowered by passing through the miniaturized region 5S2, a desired temperature is obtained in the second heated region 5S3. It can be heated again to the set temperature.

  In addition, since the plurality of wall members 511 are provided in the miniaturized region 5S2, comparatively large mist contained in the steam adheres to the wall member 511 and is removed from the steam, and the mist contained in the steam is further removed. It can surely be miniaturized.

  In addition, since a plurality of small holes are formed in the upstream side wall member 511a and the downstream side wall member 511b, more mist contained in the steam can be refined by passing through these small holes.

<Other modified embodiments>
The present invention is not limited to the above embodiment.

  For example, in the embodiment, superheated steam is supplied to the preheating chamber and the heating chamber, but steam may be supplied.

  In the above-described embodiment, the supply amount control unit is configured to adjust the supply pressure of the steam using the pressure regulating valve, but may be configured to adjust the supply flow rate of the steam using a flow control device such as a mass flow controller. .

In the above-described embodiment, the steam is meandering in the miniaturized region. However, for example, the structure may be such that the steam flows, for example, spirally by using a stirring element such as a static mixer as the wall member.
In addition, a plurality of small holes may be formed in the inner wall member, and a plurality of small holes may not necessarily be formed as long as the upstream side wall member and the downstream side wall member are provided with notches similar to the inner wall member. good.
Furthermore, the small hole formed in the upstream side wall member or the downstream side wall member is not limited to a circular shape, and may be variously changed such as an elliptical shape, a triangular shape, a rectangular shape, a polygonal shape, and examples of the upstream side wall member and the downstream side wall member include It may be a mesh.

In the embodiment, the set temperatures of the first heating region and the second heating region are the same. However, the set temperatures of the first heating region and the second heating region may be different from each other.
Further, it is not always necessary to provide both the first heating region and the second heating region, and only one of the heating regions may be provided. Furthermore, the number of heating regions and miniaturized regions may be changed as appropriate, for example, by providing three heating regions and two miniaturized regions interposed between adjacent heating regions.

  In the embodiment, the preheating chamber and the heating chamber are provided, but it is not always necessary to provide the preheating chamber.

  In the embodiment, the heating mechanism for the preheating chamber or the heating mechanism for the heating chamber heats air, but it may heat a gas other than air.

  In addition, it goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 100 ... Label heating apparatus 10 ... Conveyance mechanism 20 ... Preheating chamber 30 ... Heating chamber 50 ... Steam supply mechanism 5L ... Steam supply path 51 ... Temperature control part 51S ... 1st heating area | region 5S2 ... Refinement | miniaturization area | region 5S3 ... 2nd heating area | region 511 ... Wall member 52 ... Supply amount control part 5V1 ... Primary side pressure regulation valve 5V2 ... Secondary side pressure regulation valve

Claims (8)

A label heating device for blowing hot air on a label coated on an article to be attached to attach the label to the article to be attached,
A heating chamber into which the object to be mounted is carried in and out and hot air is supplied;
A label heating apparatus comprising: a steam supply mechanism configured to supply steam to the heating chamber and change a supply amount of the steam.   The label heating apparatus according to claim 1, wherein the steam supply mechanism supplies superheated steam to the heating chamber.   The label heating apparatus according to claim 1, wherein the steam supply mechanism is configured to be switchable between a supply state for supplying steam to the heating chamber and a stop state for stopping supply of steam.   The label heating apparatus according to any one of claims 1 to 3, wherein the steam supply mechanism controls a supply pressure of steam supplied to the heating chamber to 0 Pa or more and 0.06 Pa or less. The steam supply mechanism is
The label heating apparatus according to any one of claims 1 to 4, further comprising a temperature adjustment unit that adjusts a temperature of the steam supplied to the heating chamber.   The label heating apparatus according to claim 5, wherein the temperature adjustment unit adjusts the temperature of steam supplied to the heating chamber to 80 ° C. or more and 600 ° C. or less. A second heating chamber that is provided upstream or downstream of the heating chamber in the conveyance path of the attachment object, and that heats the label covered with the attachment object;
The label heating apparatus according to any one of claims 1 to 6, wherein the steam supply path supplies steam to both the heating chamber and the second heating chamber. It is used in a label heating device for blowing hot air on a label coated on an object to be mounted and mounting the label on the object to be mounted,
A steam supply mechanism configured to change the supply amount of steam while supplying the steam to a heating chamber to which hot air is supplied while carrying the work in and out.