JP3098264U - stamp - Google Patents

Abstract

A seal having a sharp pointillized three-dimensional figure therein is obtained.
A three-dimensional three-dimensional figure (3) is formed inside a seal material (1) made of transparent crystal glass. Imprints such as characters and figures are directly engraved on the stamp surface 2 at the lower end of the stamp material 1. The three-dimensional figure 3 is formed by stippling in which one point of the stamping material 1 is thermally transformed by irradiating a laser beam toward a point inside the stamping material 1 from three directions.
[Selection diagram] Fig. 1

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a stamp in which a three-dimensional figure is formed inside a transparent glass stamping material.
[0002]
[Prior art]
In JP-A-9-254511, a three-dimensional figure is formed by stippling inside a stamp material. There, a three-dimensional figure is formed by condensing a laser beam inside the stamp material and thermally altering the resin of the stamp material.
[0003]
[Problems to be solved by the invention]
In the above conventional example, since the laser beam is irradiated from one direction, it is necessary to collect the laser beam at one point using a convex lens or a concave mirror. In this case, the laser beam arrives at the focus position while concentrating the energy, and the energy is considerably high also around the focus position, and the periphery of the focus position is also deteriorated at the same time. In particular, since the stamping material is made of a synthetic resin, it is easily deteriorated. As a result, the three-dimensional figure tends to be blurred.
[0004]
An object of the present invention is to obtain a stamp in which a sharp three-dimensional figure of stippling is formed inside a stamp material.
[0005]
[Means for Solving the Problems]
As shown in FIG. 1, the present invention is a stamp in which a three-dimensional figure 3 is formed inside a transparent glass stamping material 1, and the three-dimensional figure 3 is directed toward a point inside the stamping material 1 by a laser beam. Are irradiated from a plurality of directions to change one point of the stamp material 1.
[0006]
Here, the material of the stamp material 1 includes colorless transparent and translucent glass, as well as transparent glass lightly colored with red or blue. Glass also includes quartz, sapphire, agate and jade. Among them, the stamp material 1 is preferably made of a transparent crystal glass having a square pillar shape.
[0007]
The stamp face can be directly engraved on the stamp face 2 at the lower end of the stamp material 1 by sandblasting in which a sand-like abrasive is sprayed. The three-dimensional figure 3 can be formed by laser beams irradiated from at least three directions.
[0008]
[Effects of the invention]
According to the seal of the present invention, since the three-dimensional figure 3 inside the stamp material 1 is formed by laser beams irradiated from a plurality of directions, the energy of each laser beam can be reduced. Therefore, the three-dimensional figure 3 is not altered by the laser beam, so that a stamp having the three-dimensional figure 3 with sharp stippling can be obtained. In addition, since the stamp material 1 is made of glass and is less likely to be degraded than that of synthetic resin, a sharper three-dimensional figure 3 of stippling can be obtained.
[0009]
When engraving an imprint directly on the stamp material 1 by sandblasting, compared to a case where a stamp plate is pasted on the stamp material to form an imprint on the stamp plate, a sense of transparency is generated over the entire stamp, and the appearance of the stamp is improved. The imprint can be confirmed from the upper surface side of the stamp material 1.
[0010]
When the stamp material 1 is a transparent crystal glass, the appearance of the stamp is further improved.
[0011]
[Embodiment of the invention]
FIG. 1 shows a stamp according to the present invention, in which a stamping material 1 made of transparent crystal glass is formed in a vertically long rectangular column shape. At the lower end of the stamping material 1, a stamping surface 2 on which imprints such as characters and figures are engraved. Inside the stamp material 1, a three-dimensional figure 3 is formed by stippling. The seal is engraved by sandblasting.
[0012]
The three-dimensional figure 3 is formed by a laser engraving machine so as to become a three-dimensional figure. As this laser engraving machine, a YAG laser transmitter is used to irradiate a laser beam toward the inside of the stamp material 1 from three directions, and the stamp material 1 is thermally altered at a point where the three laser beams intersect. That is, the energy of each laser beam does not change the quality of the printing material 1, but the energy at the point where the three laser beams intersect changes the quality of the printing material 1.
[0013]
This alteration point can be visually confirmed as a cloudy point. The three-dimensional figure 3 is formed by stippling by sequentially forming the cloudy spots inside the stamp material 1. Cracking and discoloration correspond to the alteration.
[0014]
The data of the three-dimensional figure 3 is created in advance using a computer and stored in the computer. This data is sent to the laser engraving machine, where the intersection position and irradiation timing of the laser beam are controlled.
[0015]
The seal imprint on the seal face 2 is designed in advance using a seal imprint creating program provided in the computer, and the seal imprint data is stored in the computer. Further, it is also possible to prepare a drawing in which the seal imprint is described in advance, input the seal imprint into the computer with a scanner or the like, and store the seal imprint data in the computer. Imprint data can be modified by a computer.
[0016]
Prior to sandblasting, the stamp material 1 is set on a jig, a check film is attached to the stamp face 2, and the stamp material is set on a laser beam machine. This laser beam machine is used to create a masking sheet during sandblasting. The imprint data is sent to a laser beam machine.
[0017]
The laser processing machine marks (temporarily engraves) the imprint on the confirmation film with a laser beam. The imprint is confirmed by this marking, and if there is a displacement or the like, the imprint data is corrected. After the correction, the confirmation film is attached to the stamp surface 2 again, and the confirmation is performed by marking the confirmation film with a laser beam machine.
[0018]
Thereafter, the film for confirmation is removed, and a masking sheet is attached to the stamped surface 2. A laser processing machine burns off the engraved portion of the masking sheet with a sandblasting machine with a laser beam to expose the engraved portion. .
[0019]
Thereafter, the stamp material 1 is set in the sand blasting machine. The sand blasting machine blows a sand-like abrasive such as diamond sand or silicon carbide sand from the nozzle toward the stamp surface 2 to cut the engraved portion. The outer surface of the stamping material 1 other than the stamping surface 2 is covered with a masking tape and is prevented from being damaged by the abrasive. Thereafter, the masking sheet and the masking tape are removed from the stamp material 1.
[0020]
When the seal of the present invention is placed on lighting or the like, light can be reflected by the three-dimensional figure 3 to produce an illumination effect.
[0021]
Either the processing of the three-dimensional figure 3 or the processing of the imprint on the stamp surface 2 may be performed first. The laser beam may be applied to the inside of the printing material 1 from two directions, or may be applied to the inside of the printing material 1 from four or more directions. The three-dimensional figure 3 widely includes a figure in which a constellation is three-dimensionally imaged, a figure in which a cartoon character is three-dimensionally, and the like.
[Brief description of the drawings]
FIG. 1 is a perspective view of a seal according to the present invention.
1 stamping material 2 stamping surface 3 3D figure

Claims (4)

A stamp in which a three-dimensional figure 3 is formed inside a transparent glass stamp 1,
A stamp, wherein the three-dimensional figure 3 is formed by stippling in which one point of the stamp material 1 is altered by irradiating a laser beam toward a point inside the stamp material 1 from a plurality of directions. The seal according to claim 1, wherein the seal is directly engraved by sandblasting in which a sand-like abrasive is sprayed on the seal surface 2 at the lower end of the seal material 1. 3. The seal according to claim 2, wherein the three-dimensional figure 3 is formed by laser beams irradiated from at least three directions. The seal according to claim 3, wherein the seal material 1 is a square columnar transparent crystal glass.

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