JP2018091534A - Glass top plate for stove, and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass top plate for a stove which can appropriately solve a variety of problems based on depicting a pattern or the like by using an ink layer.SOLUTION: A glass top plate A for a stove includes a glass plate 1. On a surface of the glass plate 1, a concavity 10 is formed, and depicts a pattern, graphic, or character.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a glass top plate for a stove as a constituent element such as a gas stove or an IH stove, and a method for manufacturing the same.

  As a top plate of a gas stove, there is a glass top plate (see, for example, Patent Document 1). The glass top plate looks good, can give a high-class feeling, and is excellent in cleanability when spilled or the like occurs.

  In such a glass top plate, the appearance is further improved by applying a pattern to the surface thereof. In this case, conventionally, as shown in FIG. 6, for example, a means for forming an ink layer 9 representing a pattern on the surface of a glass plate 7 constituting the main part of the glass top plate is employed. The ink layer 9 is obtained by, for example, applying glass ink to the glass plate 7 by a screen printing technique and then baking the ink at a high temperature of about 650 ° C.

  However, the prior art has room for improvement as described below.

First, since the ink layer 9 is formed through a process of printing the printed ink at a high temperature, so-called ink loss is likely to occur and the yield is poor.
Secondly, the ink layer 9 is easily peeled off when it comes into contact with, for example, the virtues. In order to prevent this, it is necessary to form the clear layer 2e on the ink layer 9, but when the clear layer 2e is peeled off, the ink layer 9 is also peeled off.
Thirdly, a printing plate for the ink layer 9 is required, and lacks flexibility when changing the pattern.
Fourth, a furnace for baking the ink layer 9 is necessary, and the working environment is not so good.

JP 2014-20646 A

  The present invention has been conceived under the circumstances as described above, and a glass for a stove that can appropriately solve various problems based on expressing a pattern or the like using an ink layer. An object of the present invention is to provide a top plate and a manufacturing method thereof.

  In order to solve the above problems, the present invention takes the following technical means.

  The stove glass top plate provided by the first aspect of the present invention is a stove glass top plate provided with a glass plate, wherein at least one recess is formed on the surface of the glass plate, and This recess is characterized by expressing a pattern, a figure, a character, or a symbol.

According to such a configuration, the following effects can be obtained.
That is, as a means for expressing a pattern or the like on the surface of the glass plate, a recess is used and no means for providing an ink layer is employed. For this reason, it is possible to appropriately solve the problems in the prior art in which a pattern or the like is expressed by the ink layer. Specifically, first, the concave portion can be formed by laser processing as will be described later, and poor yield due to ink loss or the like can be eliminated. Secondly, unlike the ink layer, the concave portion formed in the glass plate does not peel off and has excellent durability. Thirdly, a printing plate is unnecessary, and the flexibility when changing the pattern is excellent. Fourthly, a furnace for baking the ink layer is unnecessary and the working environment can be improved.
Furthermore, the conventional ink layer expresses a pattern or the like by color, but the concave portion in the present invention is not an expression by such color, so it is possible to have a design with a taste different from the conventional one. is there.

  In the present invention, preferably, as the concave portions, a plurality of dot-shaped concave portions that are separated from each other or partially overlap each other are formed, and the plurality of concave portions are provided in a collective arrangement. The pattern, figure, character, or symbol is expressed.

  According to such a configuration, it is possible to reduce the size of each of the plurality of recesses used for expressing a pattern and the like and reduce the total area (the processing amount of the glass plate). Therefore, it is possible to facilitate the processing of the plurality of recesses, shorten the processing time, reduce the processing cost, and the like.

  In this invention, Preferably, the clear layer is laminated | stacked and provided in the surface of the said glass plate, and a part of this clear layer has penetrated into the said recessed part.

  According to such a structure, the surface of the glass top plate for stoves can be made into the smooth surface by a clear layer. Moreover, since a part of clear layer has approached the recessed part, the joint strength of the clear layer with respect to a glass plate can be improved, and a clear layer can be made hard to peel from a glass plate.

  In this invention, Preferably, the said recessed part represents the manufacturing information of the stove with which this glass top plate for stoves is mounted | worn.

  The manufacturing method of the glass top plate for stoves provided by the 2nd side surface of this invention is a manufacturing method for manufacturing the glass top plate for stove surfaces provided by the 1st side surface of this invention, Comprising: The said glass It is characterized by having a recess forming step for forming the recess by irradiating the surface of the plate with laser light.

  According to such a configuration, it is possible to efficiently and appropriately form a concave portion having a small size that is difficult by machining, and the glass top plate for a stove provided by the first aspect of the present invention is provided. It becomes possible to manufacture with high productivity.

  In the present invention, a picosecond laser beam is preferably used as the laser beam.

According to such a structure, it becomes preferable when forming a recessed part on the surface of a glass plate at high speed and with good appearance. A glass plate has low light absorption and a pulse width larger than that of a picosecond laser beam. For example, with a nanosecond laser beam, it is difficult to form a recess in the glass plate. This can be solved. Also, with picosecond laser light, it is possible to perform ablation processing that hardly causes thermal effects, rather than photothermal processing found in general laser light. It is possible to form a concave portion of a size with high accuracy in a clean state without burrs. On the other hand, in the case of a femtosecond laser beam having a pulse width smaller than that of the picosecond laser beam, although it is excellent in precision processability, the processing speed is slow and the productivity is lowered. On the other hand, the picosecond laser beam does not have such a problem.

  Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

(A) is a perspective view which shows an example of the glass top plate for stoves which concerns on this invention, (b) is a perspective view which shows an example of the use condition of the glass top plate for stoves shown in (a). (A) is a principal part top view of the glass top plate for stoves shown in FIG. 1, (b) is IIb-IIb principal part expanded sectional view of (a). (A) is the principal part enlarged plan view which shows the some recessed part formed in the glass plate of the glass top plate for stoves shown in FIG. 1 and FIG. 2, (b) is IIIb-IIIb essential part of (a). FIG. It is explanatory drawing which shows an example of schematic structure of the laser processing machine used for the recessed part formation to a glass plate. It is a principal part top view which shows the other example of this invention, and its one part enlarged view. It is principal part sectional drawing which shows an example of a prior art.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  A glass top plate A for stove shown in FIG. 1 is mounted on the stove main body 5 as a main part of the gas stove B, and a plurality of stove openings 18 for exposing the stove burner 50 are formed. A glass plate 1 having a substantially rectangular shape in plan view is provided. The glass plate 1 is, for example, borosilicate glass.

  As shown in FIG. 2, a plurality of recesses 10 are formed on the surface of the glass plate 1, and the clear layer 2 is laminated. The plurality of recesses 10 represent a plurality of circular patterns F <b> 1 that constitute a polka dot pattern that appears over substantially the entire surface of the glass plate 1. Further, the character F2 indicating the lot number and other manufacturing information of the gas stove B is also expressed.

  More specifically, as shown in FIG. 3, a plurality of fine recesses 10 having a diameter of about 1 to 50 μm and a depth of about 1 to 50 μm are formed on the surface of the glass plate 1 by laser processing described later. Yes. The plurality of recesses 10 are formed at an appropriate arrangement pitch (for example, about 2 to 100 μm) so as to be separated from each other or overlap each other as described later with reference to FIG. In the plan view, the entire arrangement is a circular pattern F1. Similarly to the circular pattern F1, the character F2 is also arranged in such a manner that a plurality of recessed portions 10 that are separated from each other or overlap with each other are gathered to form a predetermined character shape in plan view.

  The clear layer 2 is configured by applying a hydrophilic paint, for example, and is colorless and transparent or colored and transparent. The lower surface side of the clear layer 2 enters the plurality of recesses 10.

As a means for forming the plurality of recesses 10 in the glass plate 1, for example, a laser processing machine C as shown in FIG. 4 is used.
The laser processing machine C is a picosecond laser processing machine, and includes a picosecond pulse laser oscillator 60, an amplifier 61, a mirror 62, a condenser lens 63, and the like. Although the configuration of each of these parts is conventionally known and omitted, the picosecond laser beam is, for example, a picosecond laser beam in the ultraviolet region having a wavelength of about 355 nm. The glass plate 1 as a work is placed on a moving table 64. When a plurality of recesses 10 are formed on the glass plate 1, a picosecond laser beam is sequentially applied to a predetermined portion on the surface of the glass plate 1 while moving the glass plate 1 in the x and y directions using the moving table 64. Irradiate.
In addition, when forming one recessed part 10, you may form one recessed part 10 by one time laser beam irradiation, but it replaces with this, and one recessed part 10 is repeated by repeating multiple times laser beam irradiation. You may employ | adopt the means to form. According to the latter means, it is possible to make it difficult for thermal effects due to laser processing to occur.

According to the picosecond laser processing described above, it is possible to induce so-called nonlinear absorption of the laser light and appropriately form the recess 10 even though the glass plate 1 is made of a material having low light absorption. Also, the picosecond laser processing enables ablation processing that hardly causes a thermal effect, so that the concave portion 10 can be formed with high accuracy without generating burrs caused by the glass melt around the concave portion 10. It is possible to form. In the case of femtosecond laser processing with a pulse width smaller than that of the picosecond laser beam, although it is excellent in precision processability, the processing speed is slow and the productivity is lowered. There is no problem.
The glass top plate A for stove of this embodiment is manufactured by forming the above-mentioned clear layer 2 after forming the several recessed part 10 in the glass plate 1 by the above-mentioned laser beam processing.

  Next, the operation of the stove glass top plate A will be described.

  First, since the circular pattern F1 and the character F2 are expressed by the concave portions 10 formed on the glass plate 1, unlike the case where the pattern is expressed using ink or the like, the circular pattern F1 and the character F2 are peeled off. There is no such thing, and blurring is appropriately prevented. Therefore, it is possible to maintain the appearance of the stove glass top plate A in a clean state over a long period of time. Moreover, since the circular pattern F1 and the character F2 are not expressed by the paint, but are expressed by the concave portion 10, it is possible to have a design that cannot be obtained by the paint.

  Since the circular pattern F1 and the character F2 are expressed by collecting a plurality of concave portions 10, for example, the processing of the glass plate 1 is compared with the case where each of the circular pattern F1 and the character F2 is expressed by only one concave portion. The amount can be reduced. Therefore, productivity can be improved. The clear layer 2 has the effect of smoothing the surface of the glass top plate A for the stove to improve the cleaning property and covering the recess 10 so that moisture, fine dusts, etc. enter the recess 10. It also prevents that. Since the lower surface side portion of the clear layer 2 has entered the recess 10, it is possible to make it difficult to peel the clear layer 2 from the glass plate 1. In addition, when the clear layer 2 is colored and transparent, the clear layer 2 enters the concave portion 10, thereby causing a color difference between the concave portion 10 and other portions. Therefore, it is possible to make a more elegant design by utilizing such things.

FIG. 5 shows another embodiment of the present invention.
In the figure, a plurality of dot-like recesses 10 are formed so as to be partially overlapped with each other. In the figure, the arrangement pitch P1 is about 2.5 μm, for example, and the arrangement pitch P2 is about 30 to 50 μm, for example. In the figure, the concave portion 10 is not formed in the circumferential portion of the circular pattern F1, but it goes without saying that the concave portion 10 may be formed in this circumferential portion.
According to the present embodiment, the total number of the plurality of recesses 10 is increased as compared with the above-described embodiment, but the pattern or the like expressed using the plurality of recesses 10 can be made clearer or clearer. It is.

The present invention is not limited to the contents of the above-described embodiment. The specific configuration of each part of the glass top plate for stove according to the present invention can be variously modified within the range intended by the present invention. Moreover, the specific structure of each process of the manufacturing method of the glass top plate for stovess which concerns on this invention can be variously changed within the range which this invention intends.

In the above-described embodiment, the clear layer 2 is formed, but a configuration in which the clear layer 2 is not formed is also possible. The concave portion 10 formed in the glass plate 1 does not need to be formed deeply, the depth may be shallow, and the inner surface of the concave portion 10 may be a smooth surface. Therefore, even if the clear layer 2 is not formed and moisture or fine dust enters the recess 10, these can be easily removed from the recess 10 to the outside, and the cleaning property is good. It is possible.
In the above-described embodiment, the circular pattern F1 and the character F2 are expressed by the plurality of dot-shaped concave portions 10, but the present invention is not limited to this. For example, when a character is expressed, it is possible to adopt a form in which the recess extends long so that the whole or a part of the character is taken as it is.

As means for forming the recess 10 in the glass plate 1, picosecond laser processing is preferable, but processing means using laser light having a pulse width other than the picosecond laser may be employed.
In the present invention, various patterns, figures, characters, or symbols can be expressed by the concave portions 10 of the glass plate 1, and specific forms thereof are not limited. The glass plate 1 may be colorless or colored, and its specific material is not limited.
The glass top plate for a stove according to the present invention can be applied to, for example, an IH stove other than a gas stove.

A Glass top plate for stove F1 Circular pattern F2 Character 1 Glass plate 10 Recess 2 Clear layer

Claims (6)

A glass top plate for a stove equipped with a glass plate,
A glass top plate for a stove, wherein a concave portion is formed on the surface of the glass plate, and the concave portion represents a pattern, a figure, a character, or a symbol. A glass top for a stove according to claim 1,
As the concave portions, a plurality of dot-shaped concave portions that are separated from each other or partially overlap each other are formed, and the patterns, figures, and characters are provided in an arrangement in which the plurality of concave portions are gathered. A glass top for a stove where symbols are expressed. A glass top for a stove according to claim 1 or 2,
A glass top plate for a stove, in which a clear layer is laminated on the surface of the glass plate, and a part of the clear layer has entered the recess. A glass top for a stove according to any one of claims 1 to 3,
The said recessed part is the glass top plate for stoves which represents the manufacturing information of the stove with which this glass top plate for stoves is mounted | worn. A manufacturing method for manufacturing a glass top plate for a stove according to any one of claims 1 to 4,
A method for producing a glass top plate for a stove, comprising a recess forming step of forming the recess by irradiating the surface of the glass plate with laser light. It is a manufacturing method of the glass top plate for stoves of Claim 5,
A method for manufacturing a glass top plate for a stove, wherein a picosecond laser beam is used as the laser beam.

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