JP2000075794A - Display label, method and device for marking display label, and tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display label such that information can be additionally recorded on the display label bonded to a tire, a method and device for marking the display label, and a tire. SOLUTION: A bar-coded label 10 comprises a bar code layer 12, a thermally variable layer 14, and an adhesive layer 16 laminated in that order. Information about a tire is displayed on the bar code layer 12 as a bar code 15. Margins 18 for additionally recording information such as the hysteresis of tire inspection in the form of letters or the like are provided at each end of the bar code layer 12. The thermally variable layer 14 is designed to vary into a different color from the color of the surface of the bar code layer 12 when heat of 300 deg.C or higher is applied thereto by irradiation of a laser beam or the like. The laser beam is made to irradiate the label along the letters or the like marked on the margins 18, to burn the bar code layer 12 and to discolor the thermally variable layer 14 to allow recognition of the letters or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a display label, a method and an apparatus for marking a display label, and a tire.

[0002]

2. Description of the Related Art Conventionally, a bar code on which various kinds of information are recorded is attached to a tire, for example, in order to inspect the tire and automatically transport the tire (collection, sorting, identification confirmation work) in a tire manufacturing line or the like. There is a known method for identifying individual tires.

[0003] In addition to the method of attaching a bar code, characters, symbols, patterns, and the like are engraved on a metal piece such as aluminum.
The letters and the like are transferred to the tire by affixing it to the tire and vulcanizing to transfer the characters and the like to the tire, and thereafter, a method of removing aluminum, engraving a bar code, letters, and the like on a metal piece, and then applying this to a vulcanizer mold A method of engraving the tire by setting and vulcanizing the tire is known.

However, in the above-described method, since a bar code is attached to the tire before vulcanization or characters or the like are engraved, history information such as processing and inspection after the vulcanization step is added to the tire. Can not be recorded. For this reason, there is a problem that operations such as recording history information on a record form or recording the history information on a storage device or the like as a database are required. Further, there is also a problem that reading is often difficult due to wear and dirt of the bar code and the engraved portion.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above facts, and is a display label capable of recording information by adding information to a display label attached to a tire, a method and an apparatus for marking a display label, and The aim is to get tires.

[0006]

According to a first aspect of the present invention, there is provided a display label comprising: a display layer on which information can be displayed; and a display layer laminated on the display layer and heated at a temperature exceeding a tire vulcanization temperature. And a heat-change layer that changes to a color different from the color.

According to the first aspect of the present invention, since the heat change layer that changes the color of the display layer to a color different from the color of the display layer by being heated at a temperature exceeding the tire vulcanization temperature is provided, the laser light or the like is irradiated. By removing the barcode layer and applying heat to the heat change layer to change the color to a color different from the color of the display layer, characters,
Marks, patterns, bar codes, etc. can be marked.

[0008] The display label according to claim 2 includes a display layer capable of displaying information, and a heat deformable layer laminated on the display layer and deformed by being heated at a temperature exceeding the tire vulcanization temperature. It is characterized by.

According to the second aspect of the present invention, since the heat-deformable layer which is deformed (shrinks or expands) by being heated at a temperature exceeding the tire vulcanization temperature is provided, the heat-deformation layer is irradiated with a laser beam or the like. By applying heat to the layer and deforming the layer, characters, symbols, patterns, bar codes, and the like can be marked.

[0010] The display label according to claim 3 is a display layer capable of displaying information and being removed by being heated at a temperature exceeding the tire vulcanization temperature, and a display layer which is laminated on the display layer and has a color of the display layer. And a colored layer colored differently from
It is characterized by including.

According to the third aspect of the present invention, there is provided a display layer which is removed by being heated at a temperature exceeding the tire vulcanization temperature, and a coloring layer colored differently from the color of the display layer. Therefore, by irradiating laser light or the like to remove the display layer so that the colored layer appears, characters, symbols, patterns,
A bar code or the like can be marked.

According to a fourth aspect of the present invention, the display label according to any one of the first to third aspects is attached to a tire, and the display layer of the attached display label is irradiated with laser light. , Characters, symbols, patterns, and bar codes.

According to a fifth aspect of the present invention, the marking is performed so as to overwrite a blank portion of the display layer or a barcode previously printed on the display layer.

A tire according to a sixth aspect of the present invention is characterized in that a display label marked by the marking method according to the fourth or fifth aspect is attached.

According to the fourth aspect of the present invention, a character, a symbol, a pattern,
Since new information consisting of at least one bar code can be marked, inspection information and the like after the vulcanization process can be added to the display label in the tire manufacturing line, and a new display label and record form can be added. It is not necessary to record the data by another method such as recording the data in a storage device or a storage device.

The display labels of claims 1 to 3 may be plain and have nothing printed thereon, or may be printed with characters, symbols, patterns, bar codes and the like in advance. When a barcode or the like is printed in advance, the information to be additionally recorded is marked in a blank portion of the display layer as in the invention of claim 5. Or
Marking is performed so as to overwrite a previously printed barcode. In this way, new information can be added and marked without reducing the information amount of the barcode to be printed in advance. In this case, it is necessary to perform marking in a range that does not affect the reading of the barcode. The barcode to be marked may be a two-dimensional barcode. Thereby, more information can be provided.

According to the invention described in claim 6, since the display label marked by the marking method according to claim 4 or 5 is attached to the tire, information recorded on the display label in a production line or the like is provided. By using the method, automatic conveyance of a tire can be performed.

According to a seventh aspect of the present invention, there are provided a laser beam generating means and a display layer of a display label according to any one of the first to third aspects, wherein the display layer has characters, symbols, patterns and the like. Scanning means for scanning a laser beam corresponding to at least one of the bar codes.

According to the present invention, the laser light generated by the laser light generating means is converted into at least one of a character, a symbol, a pattern, and a bar code in a state where the display label is already attached to the tire. In accordance with the scanning and marking by the scanning means, the inspection information and the like after the vulcanization process can be added to the display label and recorded on the tire production line or the like, and recorded on a new display label or record form. It is not necessary to record the data by another method, such as storing it in a storage device.

[0020]

Embodiments of the present invention will be described below in detail with reference to the drawings. In this embodiment,
The present invention is applied to a barcode label.

FIG. 1 shows a bar code label 10 according to the present embodiment attached to a sidewall portion 40 of a vulcanized tire 42 as a rubber product.

The bar code label 10 has a substantially rectangular shape whose longitudinal direction is the paper left-right direction (see FIG. 2A), and as shown in FIG.
2, the heat change layer 14 and the adhesive layer 16 are laminated in this order.

As shown in FIG. 2A, various information such as the manufacturing history such as the serial number of the tire 42 and the size of the tire are recorded on the bar code layer 12 by an ink-jet printing method using a heat-resistant ink, a thermal transfer method, or the like. It is displayed as a bar code 15. In addition, as shown in FIG. 2C, the bar code 15 is made transparent by making the bar code layer 12 transparent.
4 may be printed.

At both ends of the bar code layer 12, information such as processing and inspection history after the vulcanization step is performed by using at least one of letters, symbols, patterns and bar codes, or a combination of two or more. A margin 18 for additional recording is provided. The barcode layer 12 is made of, for example, a material that is irradiated with a laser beam or the like and heated at 300 ° C. or more to remove the irradiated portion.

The heat change layer 14 is irradiated with a laser beam or the like for 3
The barcode layer 12 is heated by applying heat of at least
Is made of a material that changes to a color different from the color of the surface to be printed. Therefore, by irradiating a laser beam along a character, a symbol, a pattern, a bar code, or the like to be marked on the margin 18, the irradiated portion of the bar code layer 12 is removed, and the heat-change layer 14 discolors, Characters, symbols, patterns, barcodes, etc. can be recognized.

The vulcanization temperature of a normal tire is 200 °
Since it is about C, the bar code layer 12 is not removed during the vulcanization of the tire, and the heat-change layer 14 does not discolor.

The adhesive layer 16 contains a compound capable of attaching the bar code label 10 to the sidewall portion 40 of the tire 42 by adhesion or adhesion.

The material constituting the bar code layer 12, the heat change layer 14, and the adhesive layer 16 is a side wall portion 40 of a tire 42 on which the bar code label 10 is mounted (see FIG. 1).
Preferably has at least the same or greater elongation relative to the surface rubber material of
Even if the side part 40 is deformed, it can be extended according to this deformation. If the elongation is smaller than the surface rubber material of the side portion 40 of the tire 42, the shearing force at the adhesive interface between the barcode label 10 and the surface of the side portion 40 of the tire 42 generated during rubber deformation cannot be sufficiently reduced. Therefore, it is not preferable.

Further, additives such as a vulcanizing agent and a vulcanization accelerator may be added to the adhesive layer 16. When a vulcanizing agent and a vulcanization accelerator are added, the bar code label 10
During vulcanization after attaching to the surface of the side wall portion 40, co-vulcanization can be caused to firmly adhere to the rubber surface. Such vulcanizing agents and vulcanization accelerators include sulfur, modified alkylphenol resins and the like.

FIG. 3A is a side sectional view showing a case where the central portion 17 of the bar code label 10 is irradiated with a laser beam. As shown in FIG. 3A, the central portion 17 of the barcode layer 12 of the barcode label 10 irradiated with the laser beam is removed, and the heat change layer 14 thereunder has changed color. The discolored portion appears on the surface, and the locus of the discolored portion can be recognized as a character or the like.

FIGS. 3B to 3D show other examples of barcode labels.

The bar code label 100 shown in FIG.
Is a bar code layer 102 made of a material that is not removed by melting, melting, evaporating, etc. even when heat of 300 ° C. or more is applied by irradiating a laser beam or the like; It comprises a thermoplastic heat-shrinkable layer 104 made of a material having a property of shrinking when heat of 300 ° C. or more is applied, and an adhesive layer 16.

When the central portion 17 is irradiated with the laser beam, the irradiated portion shrinks as shown in FIG. 3B, so that the bar code layer 12 is dented. Thereby, the trajectory of the irradiated portion can be recognized as a character or the like.

The bar code label 110 shown in FIG.
Is a bar code layer 102 that is not removed by melting, melting, evaporating, etc. even if heat of 300 ° C. or more is applied by irradiating laser light or the like;
It comprises a thermoplastic thermal expansion layer 112 made of a material having a property of expanding when heat of C or more is applied, and an adhesive layer 16.

When the laser beam is applied to the central portion 17 of the thermal expansion layer 112, the irradiated portion expands as shown in FIG. 3C, and the bar code layer 12 rises accordingly. Thereby, the trajectory of the irradiated portion can be recognized as a character or the like.

The heat shrink layer 104 and the heat expansion layer 112
Is made of a thermoplastic material and does not return to its original state even when the temperature decreases.

The bar code label 120 shown in FIG.
Is irradiated with a laser beam or the like shown in FIG.
The barcode layer 12 from which the irradiated portion is removed by the application of heat of not less than ° C, and the colored layer 1 made of a material colored differently from the surface of the barcode layer 12
22 and an adhesive layer 16.

The coloring layer 122 is colored in a different color from the surface of the barcode layer 12. When the central portion 17 is irradiated with a laser beam and the irradiated portion of the barcode layer 12 is removed, the colored layer 122 shown in FIG. The irradiated portion appears on the surface as shown in (D). As a result, the trajectory of the irradiated portion can be recognized as a character or the like.

FIG. 4 shows a schematic configuration of a marking device 20 for marking characters, symbols, patterns, bar codes, and the like on the bar code label 10 attached to the tire 42.

The marking device 20 includes a personal computer 22, and includes a bar code label 1 attached to a tire 42.
Data such as characters indicating information such as processing and inspection history after the vulcanization step for marking the margin 18 of 0 is stored. The personal computer 22 has a bar code label position detecting camera 24 for detecting the position of the bar code label 10 attached to the tire 42, and a trajectory of a desired character or the like to be marked on the margin 18 of the bar code label 10. A laser light irradiation device 26 for irradiating laser light, and a marking data confirmation camera 28 for confirming characters and the like marked by the laser light irradiation device 26 are connected.

The laser beam irradiation device 26 is, for example, YA
A laser light source 30 for generating laser light such as a G laser or a CO ₂ laser; and an optical scanning device.
The laser light 32 emitted from the mirror is turned back by the turning mirror 34 and is irradiated via the lens 36 in the direction of the barcode label 10. The laser beam irradiation device 26 marks characters and the like by scanning a laser beam in the left and right directions on the paper surface and in a direction substantially perpendicular to the paper surface by an optical scanning device constituted by a galvano mirror, a polygon, or the like (not shown). Further, the laser light irradiation device 26 is movable so that the irradiation position of the laser light can be adjusted.

The tire 42 is mounted on a mounting table 38. The mounting table 38 can be rotated in the direction of arrow A in the figure around the center of the tire 42 by a driving device (not shown).

When marking characters or the like on the tire 42, the mounting table 38 is rotated, and at the same time, the position of the barcode label 10 is detected and positioned by the barcode label position detection camera 24. In addition, bar code label 1
After adjusting the position of the laser beam irradiating device 26 so that the zero margin 18 can be marked, the laser beam is scanned over the margin 18 based on the data sent from the personal computer 22. As a result, the characters and the like formed in the margin 18 are read by the marking data confirmation camera 28 to confirm whether or not the designated characters and the like have been marked. Conveyed to the process.

FIG. 5 shows a bar code label reading device 50. The bar code reading device 50 includes an image processing device 51, and a multi-camera 54 in which a plurality of cameras are arranged in a row in the width direction of the belt conveyor 52 is connected to the image processing device 51. The multi-camera 54 is a bar code label 10 attached to the tire 42 which is conveyed by the belt conveyor 52 in the direction of arrow B in the figure.
Is read out and sent to the image processing device 51. The image processing device 51 reads a barcode from an image transmitted from the multi-camera 54 by image processing. The multi-camera 54 is attached to a support 58, and the support 58 can be moved in the direction of arrow C in the figure, so that the position of the barcode 10 can be reliably detected. ing.

FIG. 6 shows the margin 1 of the barcode label 10.
8 shows a marking data reading device 60 that reads the marking data recorded in the marking data 8. The marking data reading device 60 includes a personal computer 62, and a marking data reading camera 64 is connected to the personal computer 62. Camera 64 for reading marking data
Then, an image such as a character marked on the margin 18 of the barcode 10 is fetched and transmitted to the personal computer 62. The personal computer 62 detects characters and the like marked from the transmitted image by performing processes such as feature extraction and pattern matching.

The personal computer 22, the image processing device 51,
The personal computer 62 is connected via a LAN (not shown).
It is possible to perform data communication of pre-printed barcode information, data marked on the margin 18, and the like.

Next, the operation of the present embodiment will be described.

First, in the vulcanization step, the bar code label 10
The tire 42 to which is attached is set in a mold and 150
Vulcanization is performed by heating to ~ 200 ° C. When a vulcanizing agent and a vulcanization accelerator are added to the adhesive layer 16 of the bar code label 10, the vulcanizing agent is vulcanized together with the rubber of the tire 42, and the adhesive layer 16 is firmly fixed integrally with the rubber surface. In addition,
Since the heat change layer 14 is made of a material that does not change color unless heat of 300 ° C. or more is applied, it does not change color during vulcanization and there is no problem.

When the vulcanization is completed, the tire 42 is removed from the mold, and the desired characters and
Mark at least one of a symbol, a pattern, and a barcode.

When the tire 42 to which the barcode label 10 is attached is mounted on the mounting table 38, the mounting table 38 is rotated in the direction of arrow A in FIG. Side wall part 4
The image of 0 is taken into the personal computer 22, and the position of the barcode label 10 is detected.

When the position of the bar code label 10 is detected, the rotation of the mounting table 38 is stopped. The personal computer 22 detects the position of the margin 18 based on the image captured from the bar code label position detecting camera 24, and adjusts the position of the laser beam irradiation device 26.

Then, data such as characters indicating processing history and inspection history after the vulcanization step are transmitted to the laser beam irradiation device 26 from the personal computer 22. The laser light irradiation device 26 emits laser light from the laser light source 30. The laser light is turned toward the tire 42 by the turning mirror 34, and scans the margin 18 of the barcode label 10 via the lens 36. As a result, the bar code layer 12 at a portion along the scanned locus is removed, and the heat variable layer 14 thereunder changes color to a color different from the color of the bar code layer 12 so that the scanned locus can be recognized. Become. For example, FIG.
A character as shown in FIG. 7A is marked in the margin 18 (in FIG. 7A, “B12
3 ", and" ABCD "is marked in the right margin 18).

Next, in order to confirm whether or not the margin 18 has been correctly marked, the image of the bar code label 10 is captured by the marking data confirmation camera 28 and transmitted to the personal computer 22. The personal computer 22 performs processing such as feature extraction and pattern matching on the basis of the captured image, and confirms whether or not the data has been correctly written. If it is correctly confirmed, the process proceeds to the next step, and if it is not correctly confirmed, processing such as reattaching a barcode label is performed.

Next, in the step of reading the bar code of the bar code label 10, as shown in FIG. 5, the tire 42 is conveyed in the direction of arrow B by the belt conveyor 52 and stops at the reading position. Then, the column 58 to which the multi-camera 54 is attached is moved in the direction of arrow C to detect the position of the barcode label 10, and the image of the detected barcode label 10 is sent to the image processing device 51. The image processing device 51 reads a barcode by performing image processing on the captured image.

In the step of reading characters and the like marked on the bar code label 10, as shown in FIG.
The image of the margin 18 of the barcode label 10 is read by the marking data reading camera 64 and sent to the personal computer 62. The personal computer 62 recognizes the marked characters and the like by performing processes such as feature extraction and pattern matching from the captured image. Automatic transport of tires (collection, sorting, identification confirmation work, etc.) is performed based on the information on the barcodes and the marked characters and the like read in this manner.

As described above, since data such as processing and inspection history after the vulcanization step are marked in the margin of the barcode label, it is necessary to record the data on a new label or record form, or to store it in a storage device. There is no. In addition, since writing is performed by laser light, it is durable against friction and dirt,
It is easy to decipher marked characters. Further, even when the bar code becomes unreadable, it can be identified by the marked characters or the like.

Further, since the tire itself is not irradiated with the laser beam, the durability of the tire does not deteriorate.

Although the case where margins are provided on both sides of the barcode label 10 has been described as an example, the present invention is not limited to this. For example, as shown in FIG. 7B, a bar code may be marked on a plain bar code label 10, or the left half of the bar code label 10 may be a bar code, and the right half may be a logo or a character. Also, as shown in FIG. 7C, a bar code may be printed in a vertical direction on a part of the bar code label, and a logo and characters may be marked on a right margin. As shown in D), a large margin may be provided on the right side of the barcode label. Further, FIG.
(E), as shown in (F), the upper part of the barcode,
Alternatively, a margin may be provided on both the upper and lower sides of the barcode, and the margin may be marked.

Further, as shown in FIGS. 8A to 8F, a two-dimensional barcode may be used. In this way, the amount of information can be increased as compared with a one-dimensional barcode. FIG. 8A shows a case where a two-dimensional barcode or a two-dimensional barcode and a logo or a character are marked on a plain barcode label, and FIG. 8B shows a logo on a barcode label on which a two-dimensional barcode is printed in advance. FIG. 8C shows a two-dimensional bar code and a bar code label on which characters are printed on both sides in advance.
FIG. 8D shows a case where a two-dimensional barcode is marked on a bar code label on which a character and a two-dimensional barcode are printed in advance when a two-dimensional barcode is marked in the middle margin. 8) shows a case where a character is marked on a barcode label on which a character and a two-dimensional barcode are printed in advance. FIG. 2 shows a case in which characters are marked on a barcode label having the same.

As shown in FIGS. 8 (C) and 8 (D), when marking is performed by adding a two-dimensional bar code, for example, characteristic information and distribution information of a tire having a relatively large amount of information are added. Can be recorded.

Further, as shown in FIG. 9, a bar code may be marked so as to be overwritten. By doing so, it is not necessary to provide a margin, so that information to be added can be marked without reducing the information amount of the barcode information to be printed in advance, and the barcode label 1 can be efficiently printed.
0 can have information.

In the present embodiment, the bar code label 10 is provided on the side portion 40 of the tire 42. However, even when the bar code label 10 is attached to another rubber product, for example, a rubber roller, it can be used in the same manner as described above. .

[0063]

As described above, according to the present invention, the display label is constituted so as to include a heat-changing layer which changes to a color different from the color of the display layer when heated at a temperature exceeding the vulcanization temperature of the tire. Therefore, by irradiating a laser beam or the like, it is possible to mark new information composed of at least one of a character, a symbol, a pattern, and a barcode in a state where the display label is already attached to the tire, and manufacture the tire. This has an excellent effect that inspection information and the like after the vulcanization step can be added to a display label and recorded on a line or the like.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a tire to which a barcode label according to a first embodiment of the present invention is attached.

2A is a plan view of a barcode label according to the embodiment, FIG. 2B is a side sectional view of FIG. 2A, and FIG. 2C is a side sectional view of another example of FIG. is there.

FIGS. 3A to 3D are side cross-sectional views of a barcode label when a laser beam is irradiated.

FIG. 4 is a schematic configuration diagram of a marking device.

FIG. 5 is a schematic configuration diagram of a barcode label reading device.

FIG. 6 is a schematic configuration diagram of a marking data reading device.

FIG. 7 is a plan view showing an example of a barcode label.

FIG. 8 is a plan view illustrating an example of a barcode label.

FIG. 9 is a plan view illustrating an example of a barcode label.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Barcode label (display label) 12 Barcode layer (display layer) 14 Thermal change layer 16 Adhesive layer 20 Marking device 22 Personal computer 24 Barcode label position detection camera 26 Laser light irradiation device (laser light generation means, scanning means) 28 Marking Data Confirmation Camera 40 Sidewall Part 42 Tire 50 Barcode Reader 51 Image Processing Device 54 Multi Camera 60 Marking Data Reader 62 Personal Computer

Claims (7)

[Claims] 1. A display layer capable of displaying information, and a heat-change layer laminated on the display layer and changed to a color different from the color of the display layer when heated at a temperature exceeding a tire vulcanization temperature. Label to include. 2. A display label comprising: a display layer capable of displaying information; and a heat-deformable layer laminated on the display layer and deformed by being heated at a temperature exceeding a tire vulcanization temperature. 3. A display layer on which information can be displayed and which is removed by being heated at a temperature exceeding a tire vulcanization temperature; and a display layer laminated on the display layer and colored in a color different from the color of the display layer. A display label comprising: a coloring layer; 4. The display label according to any one of claims 1 to 3 is attached to a tire, and the display layer of the attached display label is scanned with a laser beam and heated to obtain characters, A method for marking a display label for marking at least one of a symbol, a pattern, and a barcode. 5. The method according to claim 4, wherein the marking is performed so as to overwrite a blank portion of the display layer or a barcode printed in advance on the display layer. 6. A tire to which a display label marked by the marking method according to claim 4 is attached. 7. A laser light generating means, and at least one of a character, a symbol, a pattern, and a bar code is provided on a display layer of the display label according to any one of claims 1 to 3 attached to a tire. Scanning means for scanning a laser beam according to the following.