JP2003208092A - Method for manufacturing braille guide plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastic braille guide plate the braille dots of which do not easily come off. <P>SOLUTION: An ultraviolet shield layer 12 is formed on the surface of a transferring plate 13. Recessed holes 14 for constituting braille dots are provided on the ultraviolet shield layer face of the transferring plate 13 and ultraviolet ray setting resin 15 is filled in the recessed holes 14. A base plate 17 is overlaid on the face, and irradiated with ultraviolet ray from the side of the transferring plate 13 to form braille dots 18 on the base plate 17 to manufacture a braille plate 10. In the method for manufacturing the braille plate 10, releasing property is provided to the surface of the transferring plate 13 on which the ultraviolet shield layer is formed and to the inner face of the recessed holes 14, and the surface of the base plate 17 is etched. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Braille guide plate for blind persons in elevators, escalators, stairs and the like.

[0002]

2. Description of the Related Art A Braille guide plate is formed by punching it out from the back of a thin metal plate and pasting it onto a thick plate. It's bad and the appearance is not good.

There is also a method in which a thick metal plate is formed with a hole halfway according to Braille and a punch is punched in the hole to raise the Braille to the opposite side, but this also has poor productivity.

The applicant has found in Japanese Patent Application No. 11-068637 that when a hole is drilled from the back surface of a metal plate, the thinned portion is extruded at the final stage of the drilling. Based on this, we have proposed a technique for protruding Braille from the back of a metal plate while drilling a hole.

[0005]

The above-mentioned proposal has been more popular than the conventional techniques and has been well-received because the impact sound at the time of punching has been eliminated, but the user demands a cheaper one. Although braille made of plastic has been manufactured, there is a problem in that the braille may peel off from the substrate and the sizes of the protrusions forming the braille become uneven.

From the above technical background, it is an object of the present invention to provide a method of manufacturing a Braille guide plate which is made of plastic and is composed of protrusions having the same size and height without peeling off. To do.

[0007]

In order to solve the above-mentioned problems, a first invention is to form a UV blocking film on a transfer plate, and to form Braille from the UV blocking film surface of the transfer plate. Provide a hole, fill this concave hole with UV curable resin,
A substrate is superposed on the surface, and ultraviolet rays are irradiated from the transfer plate side to form Braille guide plates by forming Braille on the substrate. Releasability is given to the surface of the plate and the inner surface of the concave hole, and the surface of the substrate is subjected to etching treatment.

According to a second aspect of the present invention, an ultraviolet-curing resin discharge nozzle is attached to the X, Y, Z operating device, the Braille array is input to the memory circuit of the X, Y, Z operating device, and the output of the memory circuit is output. According to the signal, the X / Y / Z operating device, the UV curable resin discharge nozzle, and the micro quantitative pump are interlocked to form Braille on the substrate whose surface has been etched, and then UV irradiation is performed. The pump is integrated with the ultraviolet curable resin discharge nozzle.

According to the present invention constructed as described above, it is made of Braille made of plastic but does not fall off,
A Braille guide plate having the same size and height as the protrusions can be obtained.

The first invention is suitable for small-scale production, and the second invention is suitable for large-scale production.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a first embodiment will be described with reference to the process chart of FIG. For example, a transfer plate 13 in which one side of a 0.75 mm thick transparent polypropylene (PP) sheet 11 is etched by plasma irradiation or ultraviolet irradiation, and a black ultraviolet curable resin paste (ultraviolet blocking layer) 12 is applied to this surface (Fig. 1 (a)). In addition, PP
The thickness of the sheet can be appropriately changed depending on the braille height.

The transfer plate 13 may be a PP sheet having a black film laminated on the surface thereof.

The transfer plate 13 is fixed to an XY table, and the XY table is controlled to form a concave hole 14 in the transfer plate 13 so as to draw a Braille character. In addition, when the recessed hole 14 is provided, the recessed hole 14 is not penetrated and the remaining thickness is made as thin and constant as possible (FIG. 1B).

A mold release agent is applied (sprayed) to the surface of the transfer plate 13 and the inner surface of the recessed hole 14 prepared as described above,
The concave hole 14 is filled with an ultraviolet curable resin paste 15 using a micro injection pump 16 (FIG. 1 (c)). In addition, as the ultraviolet curable resin, a resin mainly containing bis-A epoxy acrylate is adopted, but the ultraviolet curable resin is not limited to this. Further, since the PP used for the transfer plate has releasability by itself, the application of the release agent can be omitted. Also,
Although the microinjection pump 16 is used for filling, a known method such as a screen printing method can be adopted.

Next, the substrate 17 is superposed on the transfer plate 13 filled with the ultraviolet curable resin paste 15, and the high pressure mercury lamp (100 watt) is separated from the surface of the transfer plate 13 by 10 cm.
Irradiation was performed for 0 to 120 seconds (FIG. 1 (d)). The irradiation amount and time of ultraviolet rays are experimentally determined, and it is preferable to employ a lamp that emits ultraviolet rays having a long wavelength if possible.

The surface of the substrate 17 is etched by irradiation with plasma or ultraviolet rays so that Braille can be surely adhered to the substrate. Further, in this example, a high pressure mercury lamp (100 watt) was irradiated for 60 to 120 seconds at a distance of 10 cm.

Finally, the transfer plate 13 and the substrate 17 are peeled off to obtain the Braille guide plate 10 as shown in FIG. 1 (e).

Next, a second embodiment will be described with reference to FIG. The surface of the substrate 27 is previously etched by plasma or ultraviolet rays, and the substrate 27 is XY.
It is attached to the table 21.

The XY table 21 is controlled by a control board 22 storing Braille, and the arm 23 has a minute metering pump 24 having a resin discharge nozzle 24n controlled in the Z direction.
Is attached.

The minute metering pump 24 includes an ultraviolet curable resin paste 25 containing bis A epoxy acrylate as a main material.
XY table 2 loaded with a cassette (not shown)
When the Braille position is determined by 1, the minute metering pump 24 is lowered by the command of the control panel 22, the ultraviolet curable resin paste 25 is dropped, and the ultraviolet ray 26 is irradiated to cure. It should be noted that the irradiation of ultraviolet rays may be performed point by point, or may be performed after writing Braille if the viscosity of the paste is high.

[0021]

As described above, according to the present invention,
Although it is a Braille made of plastic, it does not come off, so that a Braille guide plate with the same size and height of the protrusion can be obtained.

The first invention is suitable for small-scale production, and the second invention is suitable for large-scale production.

[Brief description of drawings]

FIG. 1 is a process drawing of a first embodiment.

FIG. 2 is a schematic view of a device according to a second embodiment.

[Explanation of symbols]

10 Braille information board 11 PP sheet 12 UV blocking layer 13 Transfer plate 14 recessed holes 15,25 UV curable resin 16 Micro injection pump 17,27 substrate 18 Braille 21 XY table 22 Control panel 23 arms 24 Micro metering pump 24n nozzle 26 UV

Claims (4)

[Claims] 1. An ultraviolet blocking film is formed on a transfer plate, and a concave hole for forming Braille is formed from the ultraviolet blocking film surface of the transfer plate. The concave hole is filled with an ultraviolet curable resin, and the surface thereof is formed. A method for manufacturing a Braille guide plate, in which a substrate is superposed on the substrate and ultraviolet rays are irradiated from the transfer plate side to form Braille on the substrate. 2. The method for manufacturing a Braille guide plate according to claim 1, wherein the surface of the transfer plate on which the ultraviolet blocking film is formed and the inner surface of the recessed hole are provided with releasability, and the surface of the substrate is etched. The method for manufacturing the Braille guide plate according to claim 1. 3. An X-Y-Z operating device equipped with an ultraviolet-curing resin discharge nozzle, a braille array is input to a memory circuit of the X-Y-Z operating device, and X- A method for manufacturing a Braille guide plate, which comprises irradiating ultraviolet rays after forming a Braille array on a substrate whose surface has been etched by interlocking a Y / Z operating device, an ultraviolet curable resin discharge nozzle, and a micro quantitative pump. . 4. The method for manufacturing a Braille guide plate according to claim 3, wherein the micro metering pump is integrated with the ultraviolet curable resin discharge nozzle.