JP7061352B2 - Object holding device for rotary processing - Google Patents

Description

The present invention relates to an object holding device for rotary processing used for continuously processing an object across a first surface and a second surface different from each other.

Compact containers and lipstick containers that contain cosmetics are required not only to have functionality, but also to have a good-looking design that reflects the product image. In order to meet such demands, for example, a metal thin film layer formed by aluminum vapor deposition to give a metallic luster or a transfer sheet printed with a complicated color pattern is attached to the lid of a compact container. By making full use of various technologies such as those made of aluminum, those with enhanced eye-catching effect on the appearance of the container have been proposed.

Recently, in order to impart a more complicated pattern, a part of the metal thin film layer or the transfer sheet is removed by laser irradiation, and the removed part is formed on the ground part or the ground part of the container. Characters and patterns are formed by exposing the colored layer (see, for example, Patent Document 1). Further, after forming an uneven pattern on the surface of the molded body in advance and forming a coating layer such as a metal thin film layer on the surface, the coating layer is partially removed by laser irradiation according to the unevenness of the uneven pattern. , It has been proposed to obtain a more impressive uneven pattern (see, for example, Patent Document 2).

By the way, such surface decoration usually presupposes that the surface of the molded body is a flat surface or a very gentle fold curved surface. That is, if the target surface to be decorated has a large warp or an uneven surface, the transfer sheet cannot be neatly attached and beautiful decoration cannot be imparted. Further, it is not possible to apply a continuous decorative pattern across two or more surfaces such as the top surface and the side surface of the lid portion. Similarly, when a decorative pattern is formed by laser processing, if the processed surface is a curved surface, an uneven surface, or a region that straddles a plurality of surfaces, laser irradiation is accurately performed on the surface in any direction. Because it is difficult to obtain a beautiful decorative pattern, the pattern may be partially blurred or out of shape. Even if laser irradiation is performed on two surfaces, there is a problem that the pattern is inevitably displaced at the joint.

Therefore, in order to form a continuous pattern that spans a plurality of surfaces, a commercially available laser processing machine for cutting or marking workpieces of various shapes (see, for example, Patent Documents 3 and 4) is diverted. It is conceivable to do.

Japanese Unexamined Patent Publication No. 2007-216417 Japanese Unexamined Patent Publication No. 2006-334122 Japanese Unexamined Patent Publication No. 5-293681 Japanese Patent Application Laid-Open No. 2003-308104

However, when the processing target is a cosmetic container, not only the container shape differs depending on the type of contents, but also the container shape slightly differs depending on the brand, so it is required to efficiently process a wide variety of small lots. Be done. In addition, the method of attaching the object also needs to be adjusted each time depending on the direction in which the pattern is formed. Therefore, a commercially available laser processing machine suitable for uniformly processing a large number of single workpieces cannot be directly applied to the decoration of a cosmetic container.

In addition, it is important that the appearance of the cosmetic container decorated on the outer peripheral surface is beautifully finished, and the uneven pattern and notch pattern given by laser processing are not clear or misaligned. If there is such a part, the commercial value will be greatly reduced. Therefore, the roundness of the rotation trajectory during machining and the alignment of the machining start point and machining end point are important, and much higher accuracy is required compared to the conventional laser machining of workpieces as industrial materials. There is a problem of being done.

The present invention has been made in view of such circumstances, and is used to efficiently and beautifully process a high-mix small-lot object such as a continuous pattern across a plurality of surfaces thereof. The purpose is to provide an object holding device for processing.

In order to achieve the above object, the present invention has a first surface having a specific arrangement with respect to a virtually set rotation center axis P, and a first surface connected to the first surface with respect to the rotation center axis P. The object provided with a second surface having a different arrangement from the first surface is rotatably held around the rotation center axis P, and the object is continuously or intermittently rotated. An object holding device used to process the surface of an object while changing the position of the object, which is connected to a rotation drive means having a rotation shaft for rotating the object and the rotation shaft. Rotation processing equipped with a rotation base that rotates integrally with the rotation shaft and an object fitting guide that is detachably attached to the rotation base and is fitted to a part of the object to transmit rotation to the object. The object holding device is the first gist.

Further, in the present invention, in particular, the object fitting guide fits and holds two of the objects in an arrangement that is 180 ° rotationally symmetric with respect to the rotation center axis P. The second gist is the rotating object holding device, and among them, a plurality of types of the object fitting guides are prepared, and the object fitting guides are replaced according to the shape of the object. The third gist is the enabled object holding device for rotary machining.

Further, in the present invention, among them, in particular, the object holding device for rotational processing, in which the object is a molded product for a cosmetic container and is used for rotational processing by laser processing, is the fourth gist. do.

That is, the object holding device for rotary processing of the present invention rotatably holds an object in a specific arrangement, gives rotation to the object, and continuously straddles at least two surfaces of the object surface. It is used for processing. Therefore, this device includes a rotation drive means, a rotation base rotated by the rotation drive means, and an object that is detachably attached to the rotation base and is fitted with a part of the object to transmit rotation to the object. It is equipped with a fitting guide. According to this device, the object can be easily and accurately held, and beautiful processing can be performed efficiently and beautifully.

Further, among the present inventions, in particular, the object fitting guide is adapted to fit and hold two of the objects in an arrangement that is 180 ° rotationally symmetric with respect to the rotation center axis P. Of the two objects, first, the first object is continuously processed while being rotated by 180 °, and then the second object is rotated by 180 ° from the position of the second object. By continuously processing the object in the same manner as in No. 1, the object fitting guide can be rotated by 360 ° and returned to the initial position. Therefore, the same continuous processing can be continuously applied to two objects in one rotation, which is efficient.

Further, among the present inventions, in particular, those in which a plurality of types of the object fitting guides for holding the object are prepared and the objects can be exchanged according to the shape of the object change the object. It is suitable because it is not necessary to make a large change in equipment for each, and it is possible to efficiently process a wide variety of small lots.

Further, among the present inventions, in particular, when the above-mentioned object is a molded product for a cosmetic container and is used for rotary processing by laser processing, the processing is efficiently and beautifully performed according to the required design. It can be finished and is suitable.

It is a perspective view which shows the lid part of the cosmetic container which is an example of the object processed by using the object holding device for rotary processing of this invention. It is a partial vertical sectional view explaining the structure of the said lid part. It is a developed view of the said lid part. It is explanatory drawing of the apparatus which is one Embodiment of this invention used for forming the continuous pattern on the said lid part. It is a perspective view explaining the object fitting guide for a lid part used in the said apparatus. (A) is a front view of the object fitting guide, (b) is a right side view of (a), (c) is a cross-sectional view taken along the line AA'of (a), and (d) is B of (a). -B'Cross section. (A) is a front view showing a state in which a base body to be a lid is attached to the object fitting guide and arranged at an initial position, (b) is a right side surface portion of (a), and (c) is to the base body. It is explanatory drawing of the processing method of. Both (a) and (b) are explanatory views of the processing method to the above-mentioned base body. It is a perspective view which shows the other lid part processed by using the other object fitting guide in the said apparatus. It is a perspective view explaining the object fitting guide for processing the other lid part. (A) is a front view of the object fitting guide, (b) is a right side view of (a), (c) is a cross-sectional view taken along the line CC'of (a), and (d) is D of (a). -D'is a cross-sectional view. (A) is a front view showing a state in which a base body serving as another lid is attached to the object fitting guide and arranged at an initial position, (b) is a right side view of (a), (c). Is an explanatory diagram of the processing method for the base body. Both (a) and (b) are explanatory views of the processing method to the above-mentioned base body. It is a perspective view which shows the main body part which can be machined by using another object fitting guide in the said apparatus in a state which is closed with a lid part. It is a perspective view explaining the object fitting guide for processing the said main body part. (A) is a front view of the object fitting guide, (b) is a right side view of (a), (c) is an EE'cross-sectional view of (a), and (d) is F of (a). -F'Cross section. (A) is a perspective view showing a state in which the base body to be the main body is attached to the object fitting guide, and (b) is a base body attached to the object fitting guide arranged at an initial position. A front view showing a state, (c) is a right side view of (b). It is a perspective view of the object fitting guide for processing with the main body part and the lid part closed to each other in the said apparatus. (A) is a front view of the object fitting guide, and (b) is a right side view of (a). 19 (a) is a cross-sectional view taken along the line GG'. It is a perspective view which shows the state which the base body which becomes the main body part and the base body which becomes the lid part are attached to the object fitting guide in a closed state. (A) is a front view showing a state in which two base bodies attached to the object fitting guide are arranged at initial positions, and (b) is a right side view of (a). It is a vertical sectional view explaining the processed article obtained by the other embodiment by the said apparatus.

Next, a mode for carrying out the present invention will be described. However, the present invention is not limited to the following embodiments.

The object holding device for rotary processing of the present invention (hereinafter, may be simply referred to as “device”) is used when processing the lid 1 of a compact type cosmetic container as shown in FIG. 1, for example, as an object. be able to. The lid portion 1 is a rectangular, thin concave body in a plan view, and as shown in FIG. 3 which is a developed view thereof, the top surface portion 2, the front surface portion 3, the back surface portion 4, and the left side surface portion 5 , The right side surface portion 6 is provided. The inside of the lid portion 1 is provided with a stepped portion for attaching a mirror, a convex portion for connecting a hinge to the main body of the cosmetic container, and the like, but these are general features and are not included in the present invention. Since it has nothing to do with the gist of the invention, the description thereof will be omitted.

In the lid portion 1, aluminum is applied to the surface of a base body 10 made of a resin molded body colored black [acrylonitrile-butadiene-styrene (ABS) resin in this example] via a colorless and transparent undercoat layer 11. The metal thin film layer 12 formed by vapor deposition is formed, and a metallic luster color is imparted as a whole (see FIG. 2).

Then, the metal thin film layer 12 is partially cut out, the transparent undercoat layer 11 is exposed from the cutout opening, and the surface of the black base body 10 under the transparent undercoat layer 11 is seen through and looks black. The notch pattern R due to this notch opening is composed of a band-shaped pattern that looks like a combination of a wide lace-shaped ribbon and a narrow string-shaped ribbon, and the band-shaped pattern has two lines and the top surface portion 2 in an oblique direction. It is formed to cross.

More specifically, one of the notch patterns R has a band-shaped pattern that diagonally crosses the top surface portion 2 from the left side surface portion 5 of the lid portion 1 and reaches the front surface portion 3. Further, the other strip-shaped pattern diagonally crosses the top surface portion 2 from the back surface portion 4 of the lid portion 1 and reaches the right side surface portion 6 (see FIG. 3).

The two strips of the notch pattern R both extend over the three surfaces, but the pattern is continuously formed even at the corners that are the boundaries of each surface without interruption. There is. Therefore, it has a beautiful appearance as if a real ribbon is hung on the lid portion 1, and has a high eye-catching effect.

The lid portion 1 can be obtained, for example, as follows. That is, first, an ABS resin colored in black is used as the resin material, and the base body 10 having a shape to be the lid portion 1 is prepared. An appropriate molding method such as injection molding with a mold is used for molding the base body 10.

Next, a colorless and transparent resin composition for undercoating is used on the outer surface of the base body 10 (the surface facing the outside of the top surface portion 2, the front surface portion 3, the back surface portion 4, and the left and right side surface portions 5 and 6). To form the undercoat layer 11. Then, aluminum is vapor-deposited on the surface of the undercoat layer 11 to form the metal thin film layer 12. Then, the predetermined portion of the metal thin film layer 12 is irradiated with a laser, and as shown in FIG. 2, the metal thin film layer 12 is partially volatilized and removed to form a notch pattern R (FIGS. 1 and 3). reference). The removal processing of the metal thin film layer 12 by laser irradiation is performed by inputting data of the position to be processed in advance to the laser apparatus and intermittently scanning the laser beam based on the data.

The laser irradiation can be performed, for example, by using the apparatus according to the embodiment of the present invention shown in FIG. 4 while rotating the base body 10 on which the metal thin film layer 12 is formed. More specifically, the apparatus includes a base 15 and two vertical walls 16 and 17 provided at predetermined intervals with respect to the base 15, and the vertical walls 16 and 17 attach the base body 10 to the base body 10. The motor 23 that gives the rotational operation is fixed horizontally. Further, the rotation axis of the motor 23 (not visible in the figure) protrudes to the right from the vertical wall 17, and at the tip thereof, the rotation axis is integrally rotated with the rotation axis to rotate a specific rotation center axis P. A disk-shaped rotation base 22 that rotates as a center is connected. In the following figures, the undercoat layer 11 provided under the metal thin film layer 12 is not shown.

An object fitting guide 21 that holds the base body 10 to be machined in a specific arrangement is detachably attached to the rotary base 22 by screw fixing, and the attached object fitting is attached. The combined guide 21 rotates integrally with the rotation base 22.

The object fitting guide 21 will be described in more detail. 5A and 5B are perspective views of the object fitting guide 21, FIG. 6A is a front view thereof, and FIG. 6B is a right side view of FIG. 6A. 6 (c) is a cross-sectional view taken along the line AA'of FIG. 6 (a), and FIG. 6 (d) is a cross-sectional view taken along the line BB'of FIG. 6 (a). As can be seen from these figures, the object fitting guide 21 includes a support shaft 21a that fits with the inner recess of the base body 10 (see FIG. 2) to hold the base body 10, and the rotary base 22. It is provided with a flange portion 21b for attaching to.

More specifically, the support shaft 21a is provided with a frame portion 26 that fits with the base body 10. The frame portion 26 has a square frame shape that fits into the inner recess of the base body 10, and is arranged so as to be 180 ° symmetrical with respect to the rotation center axis P, and two frame portions 26 are provided around the support shaft 21a. Therefore, the object fitting guide 21 can hold the two base bodies 10 at the same time in an arrangement that is 180 ° symmetrical with respect to the rotation center axis P. This is in consideration of the work efficiency by laser irradiation, and the two base bodies 10 can be sequentially laser-irradiated continuously. Of course, only one base body 10 may be attached to one frame portion 26 of the support shaft 21a and processed one by one.

The flange portion 21b is provided with three through holes (with counterbore, the same applies hereinafter) 27 for screw engagement with the rotation base 22 at equal intervals in the circumferential direction. A boss 28 for reinforcing the opening of the through hole 27 is provided around each through hole 27 on the back surface of the flange portion 21b (the surface facing the rotation base 22).

Further, in the above device, the output unit 25 of the laser device is arranged above the object fitting guide 21, and as shown by an arrow, faces the base body 10 held by the object fitting guide 21. The laser beam is vertically irradiated (see FIG. 4).

Next, a method of forming the notch pattern R by laser irradiation using the above device will be specifically described. First, as shown in FIG. 7A, two base bodies 10 on which the metal thin film layer 12 is formed are arranged on the object fitting guide 21 so as to be 180 ° rotationally symmetric with respect to the rotation center axis P. Install. Hereinafter, in FIG. 7A, the base body arranged on the back side is referred to as 10, and the base body arranged on the front side is referred to as 10', and the two will be described separately. In the initial state before processing, the base bodies 10 and 10'are arranged so that their top surface portions 2 are vertical. 7 (b) is a right side view of FIG. 7 (a).

Then, in the arrangement of FIG. 7A, the object fitting guide 21 is moved toward the front as shown by the arrow X while irradiating the back surface portion 4 and the left side surface portion 5 of the base body 10 on the back side with laser irradiation. Rotate and rotate the base body 10 to the arrangement shown in FIG. 6 (a) in which the top surface portion 2 of the base body 10 is vertical on the front side via the arrangement shown in FIG. 7 (c) in which the top surface portion 2 of the base body 10 is horizontal. .. As a result, the base body 10 is rotated by 180 ° about the rotation center axis P, and the back surface portion 4 and the left side surface portion 5 of the base body 10 → the top surface portion 2 → the front surface portion 3 and the right side surface portion 6 in this order. , Continuously subjected to laser irradiation, a notch pattern R composed of two strips is continuously formed along the rotation direction (direction indicated by the arrow X) (see FIG. 3).

Next, in the arrangement of FIG. 8A, the base body 10'(raw) located on the back side is irradiated with laser toward the back surface portion 4 and the left side surface portion 5 as in the previous base body 10. The object fitting guide 21 is rotated toward the front as shown by the arrow X, and is rotated to a position rotated by 180 ° from the initial position via the arrangement shown in FIG. 8 (b). In this way, the notch pattern R can be formed also on the base body 10'.

Then, the base bodies 10 and 10'can be removed from the object fitting guide 21 to obtain two lid portions 1. In the obtained lid portion 1, the metal thin film layer 12 on the surface thereof is partially removed, and a continuous band-like pattern from the back surface portion 4 to the right side surface portion 6 via the top surface portion 2 and the heavens from the left side surface portion 5 A notch pattern R is formed, which is composed of a continuous band-shaped pattern extending from the surface portion 2 to the front surface portion 3. Since the notch pattern R is continuously formed at any corner of the two surfaces without interruption, the notch pattern R as a whole has a very beautiful finish. There is.

In particular, the notch openings of the notch pattern R are all formed in a specific direction with respect to the rotation direction X (see FIG. 3) of the base body 10, with respect to the direction in which the notch pattern R extends. Because it is regular, the delicate pattern reminiscent of lace and the pattern reminiscent of the tip of a gently curved string of the notch pattern R are both clearly expressed, demonstrating a high eye-catching effect. ..

In this example, the notch pattern R is processed as a strip pattern of two lines so as to extend over three surfaces (first surface → second surface → third surface), but the processing is performed. It is not always necessary to straddle three surfaces, and processing may be performed over at least two consecutive surfaces (first surface → second surface).

Further, as described above, when laser irradiation is performed while continuously rotating the base body 10 (hereinafter, including 10') by 180 °, depending on the design of the notch pattern R, one laser irradiation may be performed. The amount of processing data to be handled becomes enormous, and one processing may take a relatively long time.

Therefore, instead of performing laser irradiation while continuously rotating the base body 10 to form the notch pattern R at once, the base body 10 is rotated by (180 / n) ° to perform n laser irradiations. When performed intermittently (for example, the base body 10 is rotated by 45 ° and processed in 4 steps), the amount of processing data handled for one laser irradiation is larger than that of continuous rotation of 180 °. It becomes 1 / n of that, and the processing is continued in a short time. However, since the laser irradiation becomes intermittent, it is necessary to be careful not to shift the notch pattern R at the start point and the end point of the laser irradiation.

Therefore, depending on the design of the notch pattern R and the required processing amount per unit time, laser irradiation is performed intermittently by dividing into n as described above, or by one rotation operation as described above. It is desirable to properly use whether to form the notch pattern R continuously and continuously.

In the above example, the lid 1 of the compact type cosmetic container is the object, and the notch pattern R straddling the plurality of surfaces thereof is formed. For example, as shown in FIG. 9A. In the case of forming a notch pattern R straddling a plurality of surfaces of a jar-type cosmetic container lid 31 as an object, the same apparatus as the apparatus shown in FIG. 4 of the present invention can be used. can.

The lid portion 31 is composed of a top surface portion 32 and a cylindrical side surface portion 33, and like the lid portion 1 shown in FIG. 1, has a base body 40 and a transparent undercoat layer (not shown). It is provided with a metal thin film layer 42 formed on the surface thereof. Then, the metal thin film layer 42 is partially cut out to form a band-shaped cutout pattern R extending from one side of the side surface portion 33 across the top surface portion 32 to the other end side of the side surface portion 33.

In order to obtain the lid portion 31, for example, the object fitting guide 45 shown in FIG. 10 is used instead of the object fitting guide 21 shown in FIG. 5, and the lid portion 31 is attached to the device shown in FIG. 4 as in the above example. Therefore, laser irradiation can be performed while rotating the base body 40 having the metal thin film layer 42 formed on the surface thereof.

The object fitting guide 45 will be described in more detail. 11 (a) is a front view of the object fitting guide 45, and FIG. 11 (b) is a right side view of FIG. 11 (a). 11 (c) is a cross-sectional view taken along the line CC'of FIG. 11 (a), and FIG. 11 (d) is a cross-sectional view taken along the line DD'of FIG. 11 (a). As can be seen from these figures, the object fitting guide 45 includes a support shaft 45a provided with a fitting portion 46 for fitting and holding the base body 40 by fitting with the inner recess of the base body 40. Is provided with a flange portion 45b for attaching the rotary base 22 to the rotary base 22.

As shown in the figure, the fitting portion 46 provided on the support shaft 45a for holding the base body 40 has a hollow drum shape, and both ends thereof are formed to have a small diameter by a predetermined width, and the small diameter portion 46a is formed. In addition, the base bodies 40 and 40'are fitted and held, respectively (see FIG. 10). Two engagement guides 47 are provided along the side surface of the fitting portion 46 to prevent the base bodies 40 and 40'from falling off, and the base bodies 40 and 40 are provided at their respective tips. An engaging claw 47a that engages with the peripheral edge of the top surface portion 32 is provided. The engagement guide 47 is not always necessary when the base bodies 40 and 40'can be stably fitted and held in the fitting portion 46.

Further, the flange portion 45b has three through holes 48 for screw engagement with the rotation base 22 (see FIG. 4), similarly to the flange portion 21b of the object fitting guide 21, at equal intervals in the circumferential direction. It is provided in. A boss 49 for reinforcing the opening of the through hole 48 is provided around each through hole 48 on the back surface of the flange portion 45b (the surface facing the rotation base 22). When attaching the flange portion 45b to the rotary base 22, it is necessary to insert the mounting screw into the through hole 48 through the fitting portion 46, so that three guide holes 48'that penetrate the fitting portion 46 are provided. There is.

The base bodies 40 and 40'with the metal thin film layer 42 formed are attached to the fitting portion 46 of the object fitting guide 45, and the notch pattern R is formed by irradiating the laser as follows. That is, first, in the initial state before processing, as shown in FIG. 12A, the top surface portions 32 of the base bodies 40 and 40'are arranged so as to be vertical. Note that FIG. 12B is a right side view of FIG. 12A.

Then, in the arrangement of FIG. 12A, the object fitting guide 45 is rotated toward the side portion 33 of the base body 40 on the back side as shown by the arrow X while irradiating the laser irradiation to the base. Through the arrangement of FIG. 12 (c) in which the top surface portion 32 of the body 40 is horizontal, the rotation is performed until the arrangement of FIG. 12 (a) in which the top surface portion 32 of the base body 40 is vertical on the front side. As a result, the base body 40 is rotated by 180 ° about the rotation center axis P, and is continuous in the order of one side of the side surface portion 33 of the base body 40 → the top surface portion 32 → the other side of the side surface portion 33. The band-shaped notch pattern R is continuously formed along the rotation direction (direction indicated by the arrow X).

Next, in the arrangement of FIG. 13A, the base body 40'(raw) located on the back side is irradiated with a laser toward the side surface portion 33 as in the case of the base body 40 above. The object fitting guide 45 is rotated toward you as shown by the arrow X, and is rotated to a position rotated by 180 ° from the initial position via the arrangement shown in FIG. 13 (b). In this way, the notch pattern R can be formed even for the base body 40'.

Then, the base bodies 40 and 40'can be removed from the object fitting guide 45 to obtain two lid portions 31. The obtained lid portion 31 has a continuous band shape in which the metal thin film layer 42 on the surface thereof is partially removed and extends from one side of the side surface portion 33 to the other side of the side surface portion 33 via the top surface portion 32. A notch pattern R is formed. Since the notch pattern R is continuously formed at any corner of the two surfaces without interruption, the notch pattern R as a whole has a very beautiful finish. There is.

Further, using the apparatus of the present invention, it is possible to process not only the lids 1 and 31 of the cosmetic container but also the main body of the cosmetic container. For example, as shown in FIG. 14, the above is also applied to the main body portion 100 of a compact type cosmetic container having a rectangular shape in a plan view and a thin concave shape, which is used in combination with the lid portion 1 shown in FIG. Similar to the example, it is possible to obtain a notch pattern R that spans a plurality of surfaces. In that case, the base body 50 (see FIG. 17) to be the main body 100 is prepared, and for example, the object fitting guide 60 shown in FIG. 15 is prepared, and the base body 50 is prepared on the object fitting guide 60. Is fitted and held, and is attached to, for example, the device shown in FIG. 4 to perform laser irradiation, whereby the notch pattern R can be formed.

The object fitting guide 60 will be described in more detail. 16 (a) is a front view of the object fitting guide 60, and FIG. 16 (b) is a right side view of FIG. 16 (a). 16 (c) is a cross-sectional view taken along the line EE'of FIG. 16 (a), and FIG. 16 (d) is a cross-sectional view taken along the line FF'of FIG. 16 (a). As can be seen from these figures, the object fitting guide 60 includes a substantially square columnar fitting portion 60a and a flange portion 60b. Then, on the tip surface of the fitting portion 60a, an edge of a convex portion 61 that fits with the recess for accommodating the middle plate of the base body 50 and a notch portion 50a (see FIG. 15) that serves as a hinge of the base body 50. An engaging claw 62 that engages with the portion and an engaging claw 63 that engages with the engaging portion for opening and closing the lid portion are provided. When the base body 50 is fitted and held in a stable manner by fitting the tip surface of the fitting portion 60a and the base body 50, the engaging claws 62 and 63 are not always necessary.

Further, the flange portion 60b is provided with three through holes 64 for screw engagement with the rotation base 22 (see FIG. 4) at equal intervals in the circumferential direction, similarly to the object fitting guide 21 and the like. ing. A boss 65 for reinforcing the opening of the through hole 64 is provided around each through hole 64 on the back surface of the flange portion 60b (the surface facing the rotation base 22). When the flange portion 60b is attached to the rotary base 22, three concave grooves 66 are provided on the peripheral wall of the fitting portion 60a in order to insert the screw into the through hole 64.

Then, as shown in FIG. 17A, the base body 50 on which the metal thin film layer 52 is formed is attached to the fitting portion 60a of the object fitting guide 60, and laser irradiation is performed as follows. A notch pattern R is formed. That is, first, in the initial state before processing, as shown in FIG. 17B, the bottom surface portion 53 of the base body 50 becomes vertical, and one surface of the side surface portions 54 becomes horizontal and receives laser irradiation. Arrange so that it is a surface. 17 (c) is a right side view of FIG. 17 (a).

In the above arrangement, the object fitting guide 60 is rotated toward the front as shown by the arrow X while irradiating the laser to one surface of the side surface portions 54, and the arrangement of the side surface portions 54 is sequentially changed. While rotating 360 °. As a result, a notch pattern R (not shown) that extends continuously over the entire circumference of the side surface portion 54 can be formed. Of course, the notch pattern R formed by laser irradiation does not have to extend over the entire circumference of the side surface portion 54, and may extend continuously over at least two surfaces.

Further, as in the case of forming the notch pattern R on the lid portion 1 shown in FIG. 1, the bottom surface portion 53 is held so as to be arranged so as to be inclined instead of vertically, and the side surface portion is irradiated with laser irradiation. A notch pattern R may be formed from 54 to the bottom surface portion 53.

Further, using the apparatus of the present invention, for example, in a compact type cosmetic container, a notch pattern R straddling the main body portion 100 and the lid portion 1 (see FIG. 14) can be formed. In that case, for example, it is preferable to use the object fitting guide 90 shown in FIG. That is, the object fitting guide 90 is a lid base body 70 serving as a lid portion having a metal thin film layer 72 formed on its surface, and a main body portion base body 80 serving as a main body portion thereof. It is possible to hold the metal thin film layer 82 formed on the surface in a closed state (see FIG. 21), and in that state, it can be attached to the device shown in FIG. It has become like.

The object fitting guide 90 will be described in more detail. 19 (a) is a front view of the object fitting guide 90, and FIG. 19 (b) is a right side view of FIG. 19 (a). Further, FIG. 20 is a cross-sectional view taken along the line GG'of FIG. 19 (a). As can be seen from these figures, the object fitting guide 90 includes a support shaft 90a and a flange portion 90b, and the lid portion base body 70 and the main body portion base body 80 are closed to each other on the support shaft 90a. A flat surface portion 91 for mounting the above is provided. The bottom surface portion 81 of the main body portion base body 80 is attached to the mounting surface of the flat surface portion 91. Then, engaging claws 92 and 93 for preventing the work from coming off are formed at the two facing corners of the flat surface portion 91.

Further, the flange portion 90b is provided with three through holes 94 for screw engagement with the rotation base 22 (see FIG. 4) at equal intervals in the circumferential direction, similarly to the object fitting guide 21 and the like. ing. A boss 95 for reinforcing the opening of the through hole 94 is provided around each through hole 94 on the back surface of the flange portion 90b (the surface facing the rotation base 22).

As shown in FIG. 21, the lid base body 70 and the main body base body 80 are attached to the flat surface portion 91 of the object fitting guide 90 in a closed state, and laser irradiation is performed as follows. A notch pattern R is formed. That is, first, in the initial state before processing, as shown in FIG. 22A, the top surface portion 71 of the lid portion base body 70 and the bottom surface portion 81 of the main body portion base body 80 are both vertical, and among the side surface portions. The two surfaces are arranged so as to be the surfaces to be irradiated with the laser. Note that FIG. 22B is a right side view of FIG. 22A.

Then, in the arrangement of FIG. 22A, the object fitting guide 90 is rotated toward the front as shown by the arrow X while irradiating the side surface portions of the base bodies 70 and 80 with the laser, and the two side surfaces thereof. Next to the portion, the top surface portion 71 of the lid portion base body 70 is irradiated with a laser, and further, the side surface portions on the opposite sides of the two base bodies 70 and 80 are also subjected to laser irradiation by rotating. In this way, in a state where the lid base body 70 and the main body base body 80 are closed to each other, the notch pattern R straddling both can be continuously formed without interruption. Of course, the notch pattern R formed by laser irradiation does not have to be continuous as a whole, but may extend continuously over at least two surfaces.

As described above, according to the apparatus of the present invention, as shown in the above series of examples, the shape of the base body 10 or the like to be processed and the extending direction of the continuous processing applied to the base body 10 or the like are described. By simply selecting and using an object fitting guide 21 or the like suitable for processing, continuous processing across a plurality of surfaces can be easily and beautifully performed. Moreover, there is an advantage that the work of rotatably attaching the object to the laser device in a properly positioned state and the work of removing it after processing can be easily performed, and the work efficiency is excellent. However, it is not always necessary to prepare a plurality of the object fitting guides 21 and the like in a form that can be exchanged, and if a specific object fitting guide is prepared for a specific object, the present invention can be obtained. It is possible to realize the desired characteristic processing.

Further, in the above series of examples, the metal thin film layer 12 (including 42 and the like) is formed on the flat base body 10 (including 40 and the like) having no uneven pattern on the surface by using the apparatus of the present invention. The metal thin film layer 12 is partially removed to obtain the notch pattern R. For example, as shown in FIG. 23, the surface of the base body 10 is provided with the uneven pattern Q, and the uneven pattern Q is provided on the surface of the base body 10. If necessary, the metal thin film layer 12 may be formed via the undercoat layer 11 and then the notch pattern R may be formed.

The uneven pattern Q can be imparted at the time of molding such as injection molding, but the uneven pattern Q is formed over at least two surfaces, and the notch of the present invention is arranged so as to overlap with at least a part of the uneven pattern Q. When forming the pattern R, for example, the same device (see FIG. 4) used for forming the notch pattern R is used, and the base body 10 is continuously centered on the specific rotation center axis P. Alternatively, the uneven pattern Q can be continuously formed by irradiating the laser while rotating intermittently. According to this method, the unevenness of the uneven pattern Q can be accurately formed, and a fine and beautiful uneven pattern Q can be obtained.

In particular, when the unevenness of the unevenness pattern Q is designed so that it cannot be clearly obtained due to the draft, it is possible to easily obtain the unevenness pattern Q as designed without using a complicated mold. Suitable. Moreover, when the uneven pattern Q is formed by laser irradiation, the processed data can be used as the processed data when forming the notch pattern R, so that the uneven pattern Q can be used without complicated adjustment. The notch pattern R can be formed with an accurate arrangement.

The apparatus of the present invention can be used for various types of processing in which an object is continuously and intermittently rotated. That is, as in the above series of examples, laser processing for removing a metal thin film layer by laser irradiation, laser processing for imparting an uneven pattern to a molded body of various materials such as resin, metal, and ceramic, and laser processing are used. It can be applied to various surface finishing processes that are not available.

Further, in the apparatus of the present invention, the configuration of the object fitting guide 21 or the like can hold the object coaxially with the rotation axis of the rotation driving means such as the motor 23 and transmit the rotation to the object. If so, any configuration may be used, and the present invention is not limited to the above example.

Further, in the present invention, the rotation center axis P when rotating the base body 10 or the like is virtually set each time in consideration of the region to be machined and the three-dimensional shape of the base body 10. .. The distance between the laser light source and the machined surface due to laser irradiation changes depending on the rotation operation, but it is important to set the range of change in the distance within the adjustment range of the focal length due to laser irradiation. ..

Further, the object to be processed using the apparatus of the present invention is not limited to the above-mentioned cosmetic container, but various molded bodies, for example, mobile phones, which are required to be continuously processed over a plurality of surfaces. , Stationery, home appliances, toys, various cases, etc.

The object holding device for rotary processing of the present invention is widely used as a device for efficiently and beautifully decorating an object of a wide variety of small lots over a plurality of surfaces thereof. can do.

10 Base body 21 Object fitting guide 22 Rotation base 23 Motor P Rotation center axis

Claims (4)

A concave object having a first surface composed of a top surface portion or a bottom surface portion and a second surface extending in the vertical direction from the edge of the first surface portion is provided with a specific rotation center axis P. By holding the object rotatably as a center and rotating the object continuously or intermittently, a continuous pattern straddling the first surface and the second surface is formed on the surface of the object while changing the position of the object. An object holding device used to perform the processing to be applied.
A rotation driving means provided with a rotation axis for rotating the object, and
A rotating base that is connected to the rotating shaft and rotates integrally with the rotating shaft,
An object holding device for rotational processing, which is detachably attached to the rotary base and is provided with an object fitting guide that fits with a part of the object and transmits rotation to the object. The object holding for rotation processing according to claim 1, wherein the object fitting guide fits and holds two of the objects in an arrangement that is 180 ° rotationally symmetric with respect to the rotation center axis P. Device. The object holding device for rotary processing according to claim 1 or 2, wherein a plurality of types of the object fitting guides are prepared, and the object fitting guides can be exchanged according to the shape of the object. The object holding device for rotational processing according to any one of claims 1 to 3, wherein the object is a molded product for a cosmetic container and is used for rotational processing by laser processing.

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