CN114193969A - Component and method for manufacturing the same - Google Patents

Abstract

The invention provides a part capable of expressing various textures through decoration formed by laser beams and a manufacturing method thereof. The part of the present invention is a part obtained by performing laser beam processing on a decorative region of a surface, and has a plurality of types of decorative patterns formed in the decorative region, the decorative patterns being composed of a plurality of grooves extending in the same direction, and the direction in which the grooves extend differs for each of the plurality of types of decorative patterns.

Description

Component and method for manufacturing the same

Technical Field

The invention relates to a part and a manufacturing method thereof.

Background

Various parts constituting the timepiece are decorated. Conventionally, there has been a decoration using a paint or plating, but such a decoration has a problem that the paint is peeled off or chipped. Therefore, in recent years, a decoration process using a laser beam has been performed on the surface of a part.

For example, patent document 1 describes a method of drawing a decorative pattern composed of a plurality of lines by irradiating a surface of a component such as an inner piece and an outer piece of a wristwatch band with a laser beam. According to the method described in patent document 1, a pattern close to the texture of a hairline pattern can be drawn on the surface of a part.

[ Prior art documents ]

[ patent document ]

[ patent document 1 ] Japanese patent laid-open No. 2019-195979

Disclosure of Invention

In the drawing method using a laser beam as described above, there is a demand for decoration having a more varied texture.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a part that can express various textures by decoration formed by a laser beam, and a method of manufacturing the same.

The manufacturing method of the present invention is a manufacturing method of a part having a decorative region on a surface and applying laser beam processing to the decorative region, and is characterized by including irradiating laser beams so as to form a plurality of types of decorative patterns including a plurality of grooves extending in the same direction in the decorative region, and the extending direction of the grooves is different for each of the plurality of types of decorative patterns.

In the manufacturing method of the present invention, it is preferable that the plurality of types of decorative patterns have different outer shapes.

In the manufacturing method of the present invention, it is preferable that any one of the plurality of types of decorative patterns is formed so as to overlap with another type of decorative pattern.

In the manufacturing method of the present invention, it is preferable that the angle difference in the extending direction of the grooves between the plural kinds of decorative patterns is 20 degrees or more.

In the manufacturing method of the present invention, it is preferable that the difference in the angle in the extending direction of the grooves between the plural kinds of decorative patterns is an integral multiple of an angle obtained by dividing 180 degrees by the number of decorative patterns.

The component of the present invention is a component obtained by performing laser beam processing on a decorative region of a surface, and is characterized by having a plurality of types of decorative patterns formed in the decorative region, the decorative patterns being composed of a plurality of grooves extending in the same direction, and the direction in which the grooves extend being different for each of the plurality of types of decorative patterns.

The parts and the manufacturing method thereof of the present invention can express various textures through decoration formed by laser beams.

Drawings

Fig. 1 is a perspective view of a band 1.

Fig. 2 is a partially enlarged perspective view of the band 1.

Fig. 3 is a diagram showing an example of the decorative pattern.

Fig. 4 is a diagram showing an example of the decorative pattern.

Fig. 5 is a schematic diagram for explaining the shape of the groove.

Fig. 6 is a diagram showing an example of a schematic configuration of the laser processing apparatus 7.

Fig. 7 is a flowchart showing an example of the flow of the decoration processing.

Fig. 8 is a view showing an example of the decorative pattern.

Detailed Description

Various embodiments of the present invention will be described below with reference to the drawings. It should be noted that the technical scope of the present invention is not limited to the embodiments, but covers the inventions described in the claims and equivalents thereof.

Fig. 1 is a perspective view of a band 1 according to an embodiment. The band 1 is a member that can wear the wristwatch on the wrist by connecting both ends thereof to the wristwatch body. The band 1 has a middle piece 2, an outer piece 3, a shaft member 4, a buckle 5, and a pair of end pieces 6a and 6 b.

The middle blocks 2 are arranged in plural in the extending direction of the band 1. A plurality of outer blocks 3 are arranged in the extending direction of the band 1 so as to sandwich the middle block 2 from both sides in the width direction of the band 1. The middle piece 2 and the outer piece 3 each have a through hole penetrating the member in the width direction near both ends in the extending direction of the band 1. The shaft member 4 is inserted into the through hole of the middle block 2 and the through holes of the outer blocks 3 on both sides thereof, thereby connecting the middle block 2 and the outer blocks 3 on both sides thereof. At this time, the middle piece 2 and the outer pieces 3 on both sides thereof are connected to each other so as to be shifted in the extending direction of the band 1, thereby connecting the plurality of middle pieces 2 and the plurality of outer pieces 3. The middle block 2 and the outer block 3 are made of titanium, but may be made of other metals, or may be made of synthetic resins such as urethane-based resins, acrylic resins, and polycarbonates.

The buckle 5 is a metal member that connects the band 1 connected to the 12-point side of the wristwatch body and the band 1 connected to the 6-point side. The endpieces 6a and 6b are metal members for connecting the band 1 to the watch body.

Fig. 2 is a partially enlarged perspective view of the band 1 in the vicinity of the middle piece 2. The middle block 2 has a 1 st middle block surface 2a, a 2 nd middle block surface 2b, and a 3 rd middle block surface 2 c. The 1 st block surface 2a is a surface extending substantially parallel to the extending direction of the band 1 on the front side of the band 1. The 2 nd middle block surface 2b is a surface extending obliquely from one side of the 1 st middle block surface 2a orthogonal to the extending direction of the band 1 with respect to the 1 st middle block surface 2 a. The 3 rd middle block surface 2c is a surface extending obliquely to the 1 st middle block surface 2a from the other side of the 1 st middle block surface 2a orthogonal to the extending direction of the band 1.

The outer block 3 has a 1 st outer block surface 3a, a 2 nd outer block surface 3b, and a 3 rd outer block surface 3 c. The 1 st outer block surface 3a is a surface extending substantially parallel to the extending direction of the band 1 on the front side of the band 1. The 2 nd outer block surface 3b is a surface extending obliquely from one side of the 1 st outer block surface 3a orthogonal to the extending direction of the band 1 with respect to the 1 st outer block surface 3 a. The 3 rd outer block surface 3c is a surface extending obliquely with respect to the 1 st outer block surface 3a from the other side of the 1 st outer block surface 3a orthogonal to the extending direction of the band 1.

The block surface 2a in the 1 st is a decorative region where laser beam processing is performed. A plurality of kinds of decorative patterns are formed on the No. 1 block surface 2 a.

Fig. 3 and 4 are views showing an example of the decorative pattern formed on the block surface 2a in fig. 1. In the examples shown in fig. 3 and 4, the 1 st, 2 nd, and 3 rd decorative patterns 100, 200, and 300 of the jungle style are formed so as to overlap each other. Fig. 4 is a diagram illustrating an outline of the 1 st decorative pattern 100 in fig. 3 surrounded by a white solid line, an outline of the 2 nd decorative pattern 200 surrounded by a white dotted line, and an outline of the 3 rd decorative pattern 300 surrounded by a white one-dot chain line for easy observation. As shown in fig. 3 and 4, the 1 st decorative pattern 100, the 2 nd decorative pattern 200, and the 3 rd decorative pattern 300 have different shapes.

Each of the 1 st, 2 nd and 3 rd decorative patterns 100, 200 and 300 is composed of a plurality of grooves extending in the same direction. The grooves are arranged at fine intervals (for example, at intervals of 60 to 120 μm), and thus the region where the decorative pattern is formed looks like when printed. The same direction is not limited to the exact same. The plurality of grooves may extend in mutually different directions within a manufacturing tolerance range (e.g., a range within ± 1 degree).

The extending direction of the grooves is different for each of the plurality of kinds of decorative patterns. In the example shown in fig. 3 and 4, the extending direction of the plurality of grooves of the 1 st decorative pattern 100 is the direction D1, the extending direction of the plurality of grooves of the 2 nd decorative pattern 200 is the direction D2 perpendicular to the direction D1, and the extending direction of the plurality of grooves of the 3 rd decorative pattern 300 is the direction D3 which is the middle of the directions D1 and D2. The extending direction of the groove is different for each type of the decorative pattern, and the decorative patterns of various types look like printing with different colors. In the examples shown in fig. 3 and 4, a plurality of types of decorative patterns each having a jungle-style appearance look like printing with different colors, and as a result, the overall appearance shows a feeling like a jungle camouflage.

Fig. 5 is a schematic diagram for explaining the shape of the groove. Each of the plurality of grooves C formed on the 1 st block surface 2a is formed by sequentially irradiating the 1 st block surface 2a with a laser beam while gradually moving an irradiation position of the laser beam having a circular irradiation surface along each of a plurality of straight lines L extending in the same direction. Thus, the groove C has a shape in which a plurality of concave portions are connected to each other, such that the groove C has a scale shape in a plan view. In fig. 5, a straight line L indicates the extending direction of the groove. The width of each recess (i.e., the diameter D of the laser light irradiation surface) is, for example, 40 μm.

Fig. 6 is a diagram showing an example of a schematic configuration of a laser processing apparatus 7 for processing the block surface 2a in fig. 1. The laser processing apparatus 7 includes a laser irradiation device 71, a processing table 72, and a control terminal 8. The laser irradiation device 71 and the processing table 72 are connected to the control terminal 8 through a network 9 such as the internet or an intranet so as to be capable of communicating with each other.

The laser irradiation device 71 is a device for irradiating the laser beam to the block surface 2a in the 1 st. The laser irradiation device 71 includes a laser oscillator such as a yag (yttrium Aluminum garnet) laser that generates a laser beam, a galvanometer that reflects the laser beam to an arbitrary position on a predetermined horizontal plane, and a condenser lens that condenses and irradiates the reflected laser beam. The galvanometer determines a position at which the laser beam is to be reflected (i.e., an irradiation position of the laser beam on the block surface 2a in fig. 1) based on an irradiation control signal received via the network 9. Thus, the laser irradiation device 71 can irradiate the laser beam so as to form a plurality of grooves extending in the predetermined direction.

The machining table 72 has a flat plate-like mounting surface which is disposed within the irradiation range of the laser irradiation device 71 and on which the middle block 2 can be mounted.

The control terminal 8 is an information processing terminal such as a pc (personal computer) or a server. The control terminal 8 transmits a control signal to the laser irradiation device 71 and the machining table 72 via the network 9. The control terminal 8 includes a storage unit 81, a communication unit 82, and a processing unit 83.

The storage unit 81 is configured to store data and programs, and includes, for example, a semiconductor memory. The storage section 81 stores an operating system program, a driver, an application program, data, and the like for processing by the processing section 83. The storage section 81 stores data of the decoration pattern to be formed in the decoration region in a data form. The data of the decorative pattern includes information indicating the shape of the outer shape of the decorative pattern formed on the block surface 2a in item 1, the extending direction of the grooves, the intervals between the grooves, and the like. The data of the decorative pattern may include information such as the diameter of the laser-irradiated surface.

The communication unit 82 is configured to enable the control terminal 8 to communicate with the laser irradiation device 71 and the machining table 72, and includes a communication interface circuit. The communication interface circuit provided in the communication unit 82 is a communication interface circuit such as a wired LAN (local Area network) or a wireless LAN. The communication unit 82 transmits the data supplied from the processing unit 83 to the laser irradiation device 71.

The processing unit 83 is configured to collectively control the operation of the control terminal 8, and includes one or more processors and peripheral circuits thereof. The Processing unit 83 includes, for example, a cpu (central Processing unit), an lsi (large Scale integration), an asic (application Specific Integrated circuit), and the like. The processing unit 83 controls the operations of the respective components of the control terminal 8 in accordance with the program stored in the storage unit 81 so that the various processes of the control terminal 8 are appropriately executed, and executes the various processes.

The processing unit 83 includes an acquisition unit 831, an irradiation control unit 832, and a determination unit 833 as functional blocks. These functional blocks are functional blocks realized by a program executed by the processing unit 83. These components can be deployed in firmware within the control terminal 8.

Fig. 7 is a flowchart showing an example of the flow of the decoration process of the block surface 2a in the 1 st stage performed by the laser processing device 7. The decoration process is performed in a state where the middle block 2, which is not processed, is placed on the processing table 72. The storage unit 81 stores in advance data of a plurality of types of decorative patterns (for example, the 1 st decorative pattern 100, the 2 nd decorative pattern 200, and the 3 rd decorative pattern 300 shown in fig. 3) to be applied to the patch 2.

First, the acquisition portion 831 acquires data of the decoration pattern (S11). The acquisition unit 831 acquires any one of the plurality of types of decoration pattern data stored in the storage unit 81.

Then, the irradiation control unit 832 irradiates a laser beam so as to form a decorative pattern composed of a plurality of grooves extending in the same direction on the 1 st block surface 2a (S12). The irradiation control unit 832 generates an irradiation control signal for sequentially irradiating a laser beam while gradually moving the irradiation position in the groove extending direction so as to form a plurality of grooves on the 1 st block surface 2a, based on the acquired data of the decorative pattern. The irradiation control unit 832 transmits the generated irradiation control signal to the laser irradiation device 71 via the communication unit 82, thereby irradiating the laser beam so as to form a decorative pattern.

Then, the determination section 833 determines whether or not all the decorative patterns stored with data in the storage section 81 have been formed (S13). In the case where it is determined that all the decoration patterns have been formed (S13-YES), the decoration process is ended.

If it is determined that all the decoration patterns have not been formed (S13-No), the decoration process returns to S11, and the acquisition unit 831 acquires data of any kind of decoration pattern from among the data of the decoration patterns that have not been acquired.

As described above, the middle block 2 has a plurality of decorative patterns formed on the 1 st middle block surface 2a of the surface and each composed of a plurality of grooves extending in the same direction. Further, the extending direction of the plurality of grooves is different for each decorative pattern. Thus, the middle block 2 can express various textures through decoration formed by the laser beam.

That is, the texture of the decorative pattern formed by the plurality of grooves is different depending on the relationship between the extending direction of the grooves, the direction of the light source, and the direction in which the decorative pattern is observed. The middle block 2 has a plurality of decorative patterns formed by grooves extending in different directions for each decorative pattern, and thus the decorative patterns are different in appearance and can exhibit various textures similar to multicolor printing.

Further, the plurality of decorative patterns are formed so as to overlap with other decorative patterns. Thus, the middle block 2 can express various textures by making the appearance of the plurality of decorative patterns different depending on the visual direction.

That is, the degree of emphasis that the decorative pattern formed by the plurality of grooves looks differs depending on the relationship between the extending direction of the grooves, the direction of the light source, and the direction in which the decorative pattern is viewed. As will be described later with reference to fig. 8, when a plurality of decorative patterns are formed so as to overlap each other, if any of the decorative patterns is visually emphasized, the other decorative patterns overlapping the decorative pattern are not easily visible. On the other hand, all the decorative patterns can be seen with the same degree of emphasis as they look. In the middle block 2, a plurality of decorative patterns formed by grooves having different extending directions are formed so as to overlap each other, so that the appearance of the decorative patterns changes depending on the viewing direction or the like, and various textures can be expressed.

Fig. 8 is a view showing an example of a decorative pattern formed on the block surface 2a in fig. 1. Fig. 8 (a) is a view of the 1 st block surface 2a shown in fig. 3 taken from the direction D1 of fig. 3, and fig. 8 (b) is a view of the 1 st block surface 2b taken from the direction D2 of fig. 3. In fig. 8, the outline of the 1 st decorative pattern 100 is shown as being surrounded by a solid white line for easy observation, but the outlines of the 2 nd decorative pattern 200 and the 3 rd decorative pattern 300 are not shown.

Comparing fig. 8 (a) with fig. 8 (b), in the example shown in fig. 8 (a), the 1 st decorative pattern 100, the 2 nd decorative pattern 200, and the 3 rd decorative pattern 300 are visually emphasized to the same extent, and as a result, the 2 nd decorative pattern 200 and the 3 rd decorative pattern 300 overlapped with the 1 st decorative pattern 100 are relatively easily seen. On the other hand, in the example shown in fig. 8 (b), the 1 st decorative pattern 100 appears to be emphasized over the other decorative patterns, and as a result, the 2 nd decorative pattern 200 and the 3 rd decorative pattern 300 overlapped with the 1 st decorative pattern 100 are relatively difficult to see. In this way, by forming a plurality of decorative patterns composed of grooves having different extending directions so as to overlap, the appearance of the decorative patterns changes depending on the viewing direction or the like, and thus various textures are expressed.

In the above description, the extending directions of the plurality of grooves constituting the 1 st decorative pattern 100, the 2 nd decorative pattern 200, and the 3 rd decorative pattern 300 have angles of 0 degree, 45 degrees, and 90 degrees with respect to the direction D1, respectively, but the present invention is not limited to such an example. The extending direction of the groove can be arbitrarily set for each decorative pattern. However, since the greater the angular difference in the extending direction of the grooves, the greater the change in the appearance according to the viewing direction or the like, and the more various textures are expressed, the angular difference in the extending direction of the grooves between the plural kinds of decorative patterns is preferably 20 degrees or more.

Further, the difference in the angle in the extending direction of the grooves between the plurality of decorative patterns may be set to an integral multiple of an angle obtained by dividing 180 degrees by the number of decorative patterns. For example, when 3 decorative patterns are formed, the extending directions of the grooves have angles of 0 degree, 60 degrees, and 120 degrees with respect to the predetermined direction. Thus, the appearance of each decorative pattern changes substantially uniformly, and various textures are expressed.

In the above description, 3 decorative patterns are formed, but the present invention is not limited to such an example. The number of the decorative patterns may be 2 or more than 4. However, when the number of the decorative patterns is increased, the difference in the angle in the extending direction of the grooves between the plurality of decorative patterns is decreased, and therefore, the number of the decorative patterns is preferably 9 or less.

In the above description, the decorative pattern is formed on the 1 st intermediate block surface 2a of the intermediate block 2, but the present invention is not limited to this example. The decorative pattern may be formed on the 2 nd middle block surface 2b or the 3 rd middle block surface 2c, or may be formed on the 1 st outer block surface 3a, the 2 nd outer block surface 3b or the 3 rd outer block surface 3c of the outer block 3, or the buckle 5. The decorative pattern may be formed on a part such as a dial, a back cover, or a main plate of the wristwatch, which is not included in the band 1, or may be formed on any metal part or resin part other than the wristwatch.

In the above description, the 1 st decorative pattern 100, the 2 nd decorative pattern 200, and the 3 rd decorative pattern 300 are jungle-style patterns, but are not limited to such an example. Each decorative pattern may be any pattern such as a square pattern, a pixel pattern, or the like.

Those skilled in the art should understand that they can add various changes, substitutions and alterations herein without departing from the spirit and scope of the invention. For example, the processes of the respective sections may be performed in different orders as appropriate within the scope of the present invention. The above-described embodiments and modifications may be implemented in combination as appropriate within the scope of the present invention.

Description of the symbols

2 … middle block

2a … No. 1 Medium Block surface

2b … No. 2 Medium Block

2c … No. 3 noodle

7 … laser processing device

8 … control terminal

831 … acquisition part

832 … irradiation control unit

833 … judging part.

Claims (6)

1. A method for manufacturing a part having a decorative region on a surface thereof and by performing laser beam processing on the decorative region, characterized in that,

including irradiating the laser beam so as to form a plurality of types of decorative patterns including a plurality of grooves extending in the same direction in the decorative region,

the extending direction of the grooves is different for each of the plurality of kinds of decorative patterns.

2. The manufacturing method according to claim 1,

the plurality of kinds of decorative patterns have different shapes from each other.

3. The manufacturing method according to claim 1 or 2,

any one of the plurality of types of decorative patterns is formed to overlap with another type of decorative pattern.

4. The manufacturing method according to any one of claims 1 to 3,

the difference in angle between the plurality of types of decorative patterns in the direction in which the grooves extend is 20 degrees or more.

5. The manufacturing method according to any one of claims 1 to 4,

the angle difference between the plurality of types of decorative patterns in the extending direction of the grooves is an integral multiple of an angle obtained by dividing 180 degrees by the number of the decorative patterns.

6. A part obtained by laser beam machining of a decorative region of a surface,

has a plurality of types of decorative patterns formed on the decorative region and composed of a plurality of grooves extending in the same direction,

the extending direction of the grooves is different for each of the plurality of kinds of decorative patterns.

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