JP5501200B2 - Parts decoration device and method - Google Patents

Description

  The present invention relates to a component decorating apparatus and a decorating method for drawing a pattern by irradiating a laser along a drawing area on a component surface to change the state of the surface.

  In automotive interior parts, many decorative parts (for example, console boxes, instrument panels, armrests, etc.) that add decoration to the surface of the resin molded body in order to improve design and quality have been put to practical use. . As a decoration method for adding decoration to such a decorative part, hydraulic transfer is generally used (see, for example, Patent Document 1). The hydraulic transfer is a technique in which a special film is floated on the surface of the water, and a predetermined pattern (pattern such as a wood grain pattern or a geometric pattern) printed on the film is transferred to the surface of the resin molded body by water pressure. According to this technique, printing on a three-dimensional curved surface can be performed.

  Laser drawing is known as an inexpensive and easy decoration method. Laser drawing is a decoration method in which a pattern is drawn by irradiating a laser along a drawing area on the surface of the component, and changing the state of the component surface by heat applied by the laser (hereinafter referred to as laser heat). It is. The state change of the component surface means that the surface is melted, the surface is burnt, the surface is discolored, or the surface layer is changed to a peeled state.

  The present inventors have developed a technique in which a printed layer is transferred to the surface of a component by hydraulic transfer, and a pattern is drawn by irradiating the surface with a laser. In this case, the brightness and color of the pattern are changed on the surface of the component, and the design can be improved.

  Incidentally, Patent Documents 2 to 4 disclose techniques for marking characters by irradiating the surface of a resin molded body with a laser. These techniques are techniques for marking characters and symbols of a plurality of colors on the surface of the resin molded body, and are not for drawing a complicated pattern.

JP 54-33115 A Japanese Patent Laid-Open No. 06-297828 Japanese Patent Laid-Open No. 07-165799 Japanese Patent Laid-Open No. 08-127175

  By the way, when laser drawing is performed by irradiating a laser under a certain irradiation condition, a drawing defect due to laser heat may occur. For example, when the drawing area where laser irradiation is performed approaches or the drawing areas overlap, the integrated amount of heat given to the component surface by laser irradiation increases, causing problems such as surface swelling and deformation. In this case, the design cannot be accurately drawn, and the design is deteriorated because the design becomes unintended due to discoloration of the surface.

  The present invention has been made in view of the above problems, and its object is to add a component that can irradiate the surface of the component with an appropriate irradiation condition to decorate an accurate pattern without drawing defects. The object is to provide a decoration device and a method for decorating parts.

  In order to solve the above-mentioned problems, the invention described in means 1 is a laser irradiation apparatus that irradiates a laser along a drawing area on a part surface and changes the surface state to draw a pattern, and controls the laser irradiation apparatus. A device for decorating a component, the control device comprising: a storage unit for storing state change data indicating a state change caused by laser irradiation of a forming material on the surface of the component; and the laser irradiation Drawing of the pattern based on irradiation parameters for setting the laser irradiation conditions output by the apparatus, pattern data including information on the distance and density of the laser irradiation points for drawing the pattern, and the state change data A parameter for correcting at least one of the irradiation parameter and the pattern data corresponding to the defective part, and a prediction part for predicting a defective part where the defect occurs. A decorative device components, characterized in that it comprises a data correction unit as its gist.

  According to the invention described in Means 1, in the control device, based on the pattern data including the irradiation parameters for setting the laser irradiation conditions, the distance and density of the laser irradiation points, and the state change data by the defect prediction unit, A defective part where a drawing defect of the pattern occurs is predicted. Then, the parameter correction unit corrects the irradiation parameters and pattern data corresponding to the defective part, and the laser irradiation apparatus is controlled based on the corrected irradiation parameters and pattern data to irradiate the laser. In this way, even when drawing regions that are subject to laser irradiation are close to each other or when drawing regions overlap each other, even for drawing regions that are difficult to draw by laser irradiation, the amount of heat suitable for the state change is given by laser irradiation. Can do. As a result, it is possible to decorate an accurate pattern on the surface of the component without causing problems such as swelling and deformation of the surface.

  The invention described in means 2 further comprises a cooling device for suppressing an increase in the surface temperature of the component in the means 1, wherein the failure prediction unit predicts failure according to the driving state of the cooling device. The gist.

  When a cooling device for suppressing an increase in the surface temperature of a component is provided as in the invention described in Means 2, the amount of heat accumulated on the surface of the component during laser irradiation changes according to the driving state of the cooling device. For this reason, a defect site | part is estimated by the defect prediction part according to the drive state of a cooling device. If it does in this way, since the amount of heat suitable for a state change can be given by laser irradiation, an exact picture can be decorated on the part surface. Examples of the cooling device include an exhaust device that lowers the surface temperature of the component by exhausting hot air containing smoke generated by laser drawing in addition to a blower that blows cooling air to cool the surface of the component. it can.

  The invention described in means 3 further comprises an image acquisition device for acquiring image data by capturing an image of the picture decorated by laser irradiation in means 1 or 2, wherein the parameter correction unit includes the image data Based on the above, the gist is to detect a defective part where the drawing defect of the pattern has occurred and to correct at least one of the irradiation parameter and the pattern data corresponding to the defective part.

  According to the invention described in the means 3, the image data of the pattern decorated by laser irradiation is acquired by the image acquisition device, and the drawing defect of the pattern is detected based on the image data. Then, the irradiation parameters and the pattern data are corrected for the defective part where the drawing defect has occurred. In this way, even if a drawing defect occurs during the decoration of a part in the initial stage of manufacture, the laser irradiation conditions can be adjusted so that the drawing defect does not occur when the next part is decorated. . As a result, the yield of decorative parts can be improved.

  According to the invention described in Means 4, in any one of the means 1 to 3, the component is formed by transferring a print layer onto a surface of the component by water pressure transfer and forming a clear coat layer that protects the print layer. The pattern is drawn by changing the state of the print layer and the clear coat layer by irradiating, and the storage unit according to the material of the clear coat layer and the type of pigment used in the print layer The gist of the invention is that the state change data is stored.

  According to the invention described in the means 4, the clear coat layer is formed on the part surface after the printing layer is transferred by hydraulic transfer. And the state change data according to the material of a clearcoat layer and the kind of pigment used for a printing layer are memorize | stored in the memory | storage part. In this way, since appropriate irradiation parameters can be set according to the material of the clear coat layer and the pigment contained in the printing layer, the amount of heat corresponding to the pattern can be given without excess or deficiency by laser irradiation. As a result, an accurate pattern can be decorated on the component surface.

  The invention according to means 5 is any one of means 1 to 3, wherein the component uses a decorative film having a print layer and a clear coat layer protecting the print layer, and the component surface is in a dry state. After the decorative film is affixed, or after the print layer and clear coat layer of the decorative film are transferred to the surface of the component in a dry state, the state of the print layer and clear coat layer is determined by laser irradiation. The pattern is drawn by changing, and the storage unit stores the state change data corresponding to the material of the clear coat layer and the type of pigment used in the print layer. The gist.

  According to the invention described in Means 5, it is possible to add a clear coat layer and a print layer in a dry state to a component surface using a decorative film having a print layer and a clear coat layer for protecting the print layer. And the state change data according to the material of a clearcoat layer and the kind of pigment used for a printing layer are memorize | stored in the memory | storage part. Even in this case, since an appropriate irradiation parameter can be set according to the material of the clear coat layer and the pigment contained in the printing layer, the amount of heat corresponding to the pattern can be given without excess or deficiency by laser irradiation. As a result, an accurate pattern can be decorated on the component surface.

  The invention described in the means 6 is a method for decorating a component that draws a pattern by irradiating a laser along a drawing area on the surface of the component to change the state of the surface, wherein the irradiation condition for setting the laser irradiation condition is set. Based on parameters, pattern data including information on the distance and density of a laser irradiation point for drawing the pattern, and state change data indicating a state change due to heat applied by the laser to the forming material on the component surface A defect prediction step for predicting a defective portion where a drawing defect of the pattern occurs, a correction step for correcting at least one of the irradiation parameter and the pattern data corresponding to the defective portion, and the correction An illumination step of irradiating the laser in accordance with at least one of an irradiation parameter and the pattern data. It is referred to as the gist thereof.

  According to the invention described in the means 6, based on the irradiation parameter, the pattern data, and the state change data, a defective portion where a pattern drawing defect occurs is predicted. Then, the irradiation parameter corresponding to the defective part is corrected, and the laser is irradiated according to the corrected irradiation parameter. In this way, even when drawing regions that are subject to laser irradiation are close to each other or when drawing regions overlap each other, even for drawing regions that are difficult to draw by laser irradiation, the amount of heat suitable for the state change is given by laser irradiation. Can do. As a result, it is possible to decorate an accurate pattern on the surface of the component without causing problems such as swelling and deformation of the surface.

  As described above in detail, according to the inventions described in the means 1 to 6, it is possible to irradiate the surface of the component with an appropriate irradiation condition and decorate an accurate pattern without drawing defects.

The top view which shows the decoration component for motor vehicles of one embodiment. The expanded sectional view which shows the decoration component for motor vehicles of one Embodiment. (A)-(c) is explanatory drawing which shows the decoration pattern by laser irradiation. The schematic block diagram which shows the decoration device of the components of one Embodiment. Explanatory drawing which shows the manufacturing method of the decorative component for motor vehicles. Explanatory drawing which shows the manufacturing method of the decorative component for motor vehicles. Explanatory drawing which shows the laser drawing state of a double crossing pattern. Explanatory drawing which shows the laser drawing state of a triple crossing pattern. Explanatory drawing which shows the defect site | part in a double crossing pattern. Explanatory drawing which shows the laser drawing state before correction | amendment and after correction | amendment. The schematic block diagram which shows the decoration apparatus of the components of another embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 and 2, the decorative part 1 for an automobile includes a three-dimensional resin molded body 2, and a printing layer 3 is formed on a drawing area on the surface (part surface) of the resin molded body 2. Is formed. In addition, the automotive decorative component 1 of the present embodiment is an interior component that constitutes an armrest of a door. The resin molded body 2 is a resin molded product molded using an ABS resin (in the present embodiment, manufactured by Toray Industries, Inc., material name 450Y-X10). In addition, for example, a ground pattern 4 having a wood grain pattern is drawn on the printing layer 3. The printing layer 3 is transferred to the surface of the component using a hydraulic transfer method, and includes a plurality of different pigments.

  Furthermore, a clear coat layer 5 for protecting the printing layer 3 is formed on the upper surface of the printing layer 3 which is the uppermost layer of the decorative part 1 for automobiles. The clear coat layer is a coat layer formed by spraying clear paint (in this embodiment, Origin Electric Co., Ltd., material name Planet TC Clear 390), and the film thickness is about 30 μm.

  The clear coat layer 5 is decorated with a geometric pattern 6 by laser drawing. In the present embodiment, as a decorative pattern by laser drawing, as shown in FIG. 3, (a) double crossing pattern 7, (b) triple crossing pattern 8, (c) quadruple crossing. There is pattern 9. A geometric pattern 6 is formed by repeating these intersecting patterns 7-9. Each of the intersecting patterns 7 to 9 is a line-shaped processed portion in which a part of the surface of the clear coat layer 5 is formed to be clouded by foaming by laser heat, and the width is about 200 μm. Further, each of the intersecting patterns 7 to 9 has a depth of about 15 μm and does not reach the printing layer 3.

  In this way, when the geometric pattern 6 is decorated on the surface of the automotive decorative part 1, the brightness and color of the base pattern 4 change depending on the viewing angle, and the design is improved.

  Here, a manufacturing system for manufacturing the automotive decorative part 1 of the present embodiment will be described. This manufacturing system includes a hydraulic transfer device (not shown), a coating device, and a decorating device 10 shown in FIG. The water pressure transfer device is provided with a transfer tank for storing treated water. The hydraulic transfer device floats a transfer film (a film made by Dai Nippon Printing Co., Ltd., not shown) formed by forming a printing layer 3 on a substrate on the surface of treated water in a transfer tank, and in that state above the transfer film Then, the printed layer 3 is transferred onto the surface of the resin molded body 2 by hydraulic pressure by pressing the resin molded body 2 on the surface. Further, the coating apparatus sprays the clear paint to coat the clear coat layer 5 on the surface of the resin molded body 2 to which the print layer 3 is transferred.

  As shown in FIG. 4, the component decoration device 10 according to the present embodiment includes a transport device 11, a CCD camera 12, a laser irradiation device 13, and a control device 14. The transport device 11 is a device for transporting the automobile decorative part 1 and includes a transport table 16 that supports the car decorative part 1 and a transport conveyor 17 that transports the table 16. . In addition, a CCD camera 12 (image acquisition device) is arranged facing the conveyance position behind the laser irradiation device 13.

The laser irradiation device 13 is, for example, a YVO ₄ laser irradiation device, which generates a laser L having a wavelength of 1064 nm, a laser deflection unit 22 that deflects the laser L, the laser generation unit 21, and the laser. And a laser control unit 23 for controlling the deflection unit 22. The laser deflection unit 22 is an optical system in which a lens 24 and a reflection mirror 25 are combined. By changing the positions of the lens 24 and the reflection mirror 25, the irradiation position and focus position of the laser L are adjusted. It has become. The laser control unit 23 controls the laser generation unit 21 and the laser deflection unit 22 to adjust the laser irradiation conditions such as the irradiation intensity of the laser L and the scanning speed of the laser L. In addition, the average output of the laser L in the laser irradiation apparatus 13 is 13 W, and the repetition frequency is 50 kHz.

  The CCD camera 12 captures an image of the pattern 6 after the laser decoration by the laser irradiation device 13. The CCD camera 12 generates picture image data based on the captured image and outputs the image data to the control device 14.

  The control device 14 is configured by a known computer including a CPU 31, a memory 32 (storage unit), an input / output port 33, and the like. The control device 14 is electrically connected to the CCD camera 12 and the laser irradiation device 13 and controls them by various drive signals.

  The pattern image data acquired from the CCD camera 12 is stored in the memory 32 of the control device 14. The memory 32 stores in advance irradiation parameters indicating laser irradiation conditions (laser L irradiation time, laser L irradiation intensity, laser L spot diameter, etc.) of the laser irradiation apparatus 13. Further, in the memory 32, state change data indicating a state change due to laser irradiation of the forming material of the clear coat layer 5, and pattern data for drawing the pattern 6 (data including information on the distance and density of the laser irradiation point) Is memorized.

  Next, the manufacturing method of the decorative component 1 for automobiles will be described.

  First, a resin molded body 2 formed into a predetermined three-dimensional shape using an ABS resin is prepared. And the printing layer 3 is transcribe | transferred by the water pressure on the surface of the resin molding 2 using a hydraulic transfer apparatus (refer FIG. 5). Furthermore, the clear coat layer 5 which protects the printing layer 3 is formed by applying a clear paint on the surface of the resin molded body 2 using a coating apparatus (see FIG. 6). Thereafter, the resin molded body 2 having the printed layer 3 and the clear coat layer 5 formed on the surface is set on the transport table 16 (see FIG. 4) of the transport device 11 with the surface facing upward, and the transport conveyor 17 is conveyed to a position facing the laser irradiation device 13.

  In the control device 14, the CPU 31 reads the irradiation parameter and the pattern data of the pattern 6 from the memory 32. The CPU 31 calculates the integrated amount of heat (laser integrated heat amount) given by the laser in the drawing area of the pattern 6 for each laser irradiation point based on the irradiation parameters and the pattern data of the pattern 6.

  Further, the CPU 31 as the defect predicting unit reads the state change data from the memory 32, and predicts a defective portion where the drawing defect of the pattern 6 occurs based on the state change data and the laser integrated heat amount data. Thereafter, the CPU 31 as the parameter correction unit corrects the irradiation parameter corresponding to the defective part. Then, the CPU 31 generates a drive signal corresponding to the corrected irradiation parameters, and outputs the generated drive signal to the laser irradiation device 13. The laser irradiation device 13 irradiates the clear coat layer 5 on the surface of the resin molded body 2 with the laser L based on the drive signal output from the CPU 31. As a result, on the surface of the clear coat layer 5, the intersecting patterns 7 to 9 as shown in FIG. 3 are formed, and the geometric pattern picture 6 is formed by the intersecting patterns 7 to 9. As a result, the automotive decorative component 1 shown in FIG. 1 is manufactured.

  Thereafter, the automotive decorative component 1 having the pattern 6 drawn on the surface of the clear coat layer 5 is transported to a position facing the CCD camera 12 by the transport conveyor 17. The CPU 31 of the control device 14 generates a drive signal and outputs the generated drive signal to the CCD camera 12. Then, the CCD camera 12 captures an image of the pattern 6 of the clear coat layer 5 based on the drive signal. Further, the CCD camera 12 generates pattern image data indicating the pattern 6 based on the captured image of the pattern 6. Thereafter, the CCD camera 12 outputs the obtained pattern image data to the control device 14. The CPU 31 of the control device 14 stores the image data of the pattern 6 acquired from the CCD camera 12 in the memory 32.

  The CPU 31 as a parameter correction unit determines the presence or absence of a defective portion where a drawing defect of the pattern 6 has occurred based on the image data of the pattern 6. Here, when a defective part is detected, the CPU 31 reads the irradiation parameter corresponding to the defective part stored in the memory 32 and corrects the data regarding the irradiation intensity. The CPU 32 stores the corrected irradiation parameter in the memory 32. And when decorating the next decoration part 1 for motor vehicles, laser irradiation is performed using the irradiation parameter after correction | amendment.

  A specific example of the correction method for correcting the irradiation parameter of the laser L at the time of laser drawing described above will be described below.

  First, in order to grasp the integrated heat quantity at which drawing defects occur in the clear coat layer 5, 6.5 W (50%), 7.8 W (60%), 9.1 W (70%), 10.4 W (80%) , 11.7 W (90%), 13.0 W (100%) laser output (irradiation intensity) of the irradiation parameters of the laser irradiation device 13 is changed so that each cross pattern constituting the pattern 6 with each laser output 7, 8, and 9 (see FIG. 3) were formed. Here, the scanning speed of the laser L was set to 2000 mm / s, and the drawing line width was set to 100 μm.

  FIG. 7 shows each image (drawing trace image), drawing line width, and intersection size (diameter) of the double intersection pattern 7 formed by changing the laser output. In the case of 6.5 W (50%) output, the drawing line width is 123 μm and the size of the intersection is 193 μm. The drawing line width and the size of the intersection become larger as the laser output increases, and at the output of 13.0 W (100%), the drawing line width becomes 206 μm and the size of the intersection becomes 555 μm.

  As shown in FIG. 7, at the intersection portion of the double intersection pattern 7, the accumulated heat amount due to the laser irradiation is doubled, so that the drawing trace is larger than the line width. Moreover, the tendency becomes remarkable when laser output increases. Further, when the laser output is 10.4 W or more, the intersection portion is swollen, which causes the appearance defect.

  FIG. 8 shows each image (drawing trace image), drawing line width, and size (diameter) of the intersection of the triple intersection pattern 8 formed by changing the laser output. In the case of 6.5 W (50%) output, the drawing line width is 128 μm, and the size of the intersection is 252 μm. The drawing line width and the size of the intersection become larger as the laser output increases, and at the output of 13.0 W (100%), the drawing line width becomes 205 μm and the size of the intersection becomes 1007 μm. At the intersection portion of the triple intersection pattern 8, the accumulated heat amount due to the laser irradiation is triple added, so that the trace of drawing at the intersection portion is larger than that of the double intersection pattern 7. In addition, although illustration is abbreviate | omitted, also about the quadruple crossing pattern 9, the drawing line width and the magnitude | size of the intersection were confirmed similarly.

  In the present embodiment, an upper limit value of the laser integrated heat amount at which a defect occurs is grasped by a combination of the state change data and the pattern data corresponding to the work material (material of the clear coat layer 5). Based on the irradiation parameter and the pattern data, the laser L irradiation parameter is corrected for the defective portion reaching the upper limit value of the laser integrated heat quantity, and the laser output is adjusted so as not to cause a drawing defect.

  Specifically, when the double intersection pattern 7 is drawn with a laser output of 13.0 W, as shown in FIG. 9, the drawing failure occurs in the region R1 having a diameter of 555 μm around the intersection of the double intersection pattern 7. Occurrence is expected. And the irradiation parameter of the laser L is correct | amended about area | region R1 (defective part) where generation | occurrence | production of this drawing defect is estimated. As shown in FIG. 7, when laser drawing is performed with a laser output of 6.5 W, the size of the intersection becomes 193 μm, which is substantially equal to the drawing line width (206 μm) in the case of a laser output of 13.0 W. From this, the irradiation parameter is corrected so that the defective portion of the double cross pattern 7 has a laser output of 6.5 W.

  Then, laser drawing of the double crossing pattern 7 was performed using the irradiation parameters corrected in this way. As a result, as shown in FIG. 10, it was possible to draw the double intersecting pattern 7 having a uniform line width without causing a drawing failure. Although not shown, the irradiation parameters of the triple intersection pattern 8 and the quadruple intersection pattern 9 were similarly corrected, and laser drawing was performed using the corrected irradiation parameters. With respect to these intersecting patterns 8 and 9, it was possible to draw a pattern having no drawing defect.

  Therefore, according to the present embodiment, the following effects can be obtained.

  (1) In the present embodiment, the laser integrated heat amount in the drawing region is calculated for each laser irradiation point based on the irradiation parameter and the pattern data, and based on the laser integrated heat amount and the state change data of the clear coat layer 5, A region R1 (defective part) where a drawing defect of the pattern 6 occurs is predicted. And the irradiation parameter corresponding to the area | region R1 is correct | amended, and the laser L is irradiated from the laser irradiation apparatus 13 based on the irradiation parameter after correction | amendment. If it does in this way, the amount of heat suitable for the state change of clear coat layer 5 can be given also to the intersection part where a drawing field overlaps in each intersection pattern 7-9 by laser irradiation. As a result, the correct pattern 6 can be decorated on the surface of the clear coat layer 5 without causing problems such as swelling and deformation of the surface.

  (2) In the present embodiment, the image of the pattern 6 after laser drawing is picked up by the CCD camera 12 and the image data of the pattern 6 is acquired. Then, the CPU 31 determines the presence / absence of the drawing defect of the pattern 6 based on the image data of the pattern 6, and the irradiation parameter is corrected for the defective portion where the drawing defect occurs. If it does in this way, even if drawing defect generate | occur | produces at the time of decoration of the decoration part 1 for motor vehicles in the manufacture initial stage, when decorating the next component 1, laser irradiation conditions so that drawing defect may not occur Can be adjusted. As a result, the yield of the automotive decorative component 1 can be improved.

  In addition, you may change embodiment of this invention as follows.

  -In the decoration apparatus 10 of the said embodiment, the surface temperature of the decorative component 1 for motor vehicles becomes high with the irradiation heat of the laser L, and a drawing defect may generate | occur | produce easily. In this case, like the decoration device 10 shown in FIG. 11, a cooling device 19 (cooling fan) for suppressing an increase in the surface temperature of the automotive decorative component 1 may be provided. The cooling device 19 is electrically connected to the control device 14 and is controlled by a drive signal from the control device 14. In this case, at the time of laser drawing by the laser irradiation device 13, the laser heat accumulated on the component surface changes depending on the driving state of the cooling device 19. For this reason, the CPU 31 as the defect predicting unit calculates the laser integrated heat amount according to the driving state of the cooling device 19, and predicts a defective portion where a drawing defect occurs based on the integrated heat amount. Then, the irradiation parameter corresponding to the defective part is corrected, and laser drawing is performed according to the corrected irradiation parameter. Even in this case, the amount of heat suitable for the state change can be given to the surface of the clear coat layer 5 by laser irradiation, so that the correct pattern 6 can be decorated on the surface of the clear coat layer 5.

  Moreover, in the decoration apparatus 10, the exhaust apparatus for exhausting the smoke generated at the time of laser drawing may be provided. In this case, since the surface temperature of the component decreases depending on the driving state of the exhaust device, the laser integrated heat amount may be calculated according to the driving state of the exhaust device. Further, the decoration device 10 includes a temperature sensor (temperature acquisition unit) for detecting the ambient temperature of the automotive decorative component 1, and is configured to calculate the laser integrated heat amount according to the ambient temperature detected by the temperature sensor. May be. Even in this case, the amount of heat suitable for the state change can be given to the surface of the clear coat layer 5 by laser irradiation, so that the correct pattern 6 can be decorated on the surface of the clear coat layer 5.

  In the decoration device 10 of the above-described embodiment, the laser output is corrected by correcting the laser output as the irradiation parameter. However, the present invention is not limited to this. For example, the scanning speed of the laser L or the laser L Irradiation parameters such as the spot diameter may be changed. Specifically, when the scanning speed of the laser L is changed, the irradiation parameter is set so that the scanning speed of the laser L is higher than that of the other portions for a defective portion where a drawing defect is predicted. Furthermore, in addition to the irradiation parameters, pattern data such as the distance and density of the laser irradiation points may be corrected. Specifically, the density of the laser irradiation points is decreased or the distance between the irradiation points is increased at the intersections that are defective portions of the respective cross patterns 7 to 9. Further, for example, in the case of the double intersecting pattern 7, one of the two drawing lines constituting the intersecting pattern 7 may be changed to a pattern in which the irradiation point corresponding to the intersection is omitted. Further, in addition to the change of the pattern data, the irradiation parameter may be changed for a defective portion near the intersection. Even if it does in this way, the heat quantity suitable for a state change can be given by laser irradiation, and the correct pattern 6 can be decorated on the component surface.

  In the above embodiment, the irradiation parameters are corrected for the intersecting patterns 7 to 9 where the drawing areas overlap. However, when the patterns are close to each other, the laser integrated heat amount exceeds a predetermined upper limit value. In the drawing area, the irradiation parameters and the pattern data may be corrected as in the case of the intersecting patterns 7-9.

  In the above embodiment, the printing layer 3 is transferred to the surface of the resin molded body 2 by a hydraulic transfer method. However, the present invention is not limited to this, and printing is performed by other methods such as an inkjet method. Layer 3 may be formed. When printing the printing layer 3 by the inkjet method, the pattern 4 can be formed at a predetermined position on the surface of the resin molded body 2. Moreover, you may add the printing layer 3 to the surface of the resin molding 2 in the dry state instead of the wet state like the hydraulic transfer method. As a method of adding the printed layer 3 to the surface of the resin molded body 2 in a dry state, a decorative film having the printed layer 3 and the clear coat layer 5 is used, and the surface of the resin molded body 2 is applied via an adhesive layer. You may employ | adopt the method of affixing a decoration film. Furthermore, a decorative film having the printing layer 3 is placed in a mold, and the printing layer 3 is transferred to the surface of the resin molding 2 using heat and pressure applied during resin molding of the resin molding 2 (in (Mold transfer method) may be employed. Here, a decorative film having the print layer 3 and the clear coat layer 5 may be used, and the print layer 3 and the clear coat layer 5 may be transferred to the surface of the resin molded body 2 at the time of resin molding. . Further, the clear coat layer 5 may be formed by spraying a clear paint after the printing layer 3 is transferred.

  In the above embodiment, the pattern 6 is drawn by changing the surface state of the clear coat layer 5 by laser irradiation (specifically, white turbidity due to foaming), but is not limited thereto. Alternatively, the pattern may be drawn by changing (for example, changing the color) the state of the print layer 3 in addition to the clear coat layer 5 by laser irradiation. In this case, state change data corresponding to the material of the clear coat layer 5 and the type of pigment used in the print layer 3 is stored in the memory 32. Further, before the clear coat layer 5 is formed, the print layer 3 may be irradiated with a laser to change the state of the print layer 3 and draw a picture. In this case, state change data corresponding to the type of pigment contained in the print layer 3 is stored in the memory 32.

  In the automobile decorative component 1 of the above embodiment, the printed layer 3 and the clear coat layer 5 are formed on the surface of the resin molded body 2, but the invention is not limited thereto. The printing layer 3 and the clear coat layer 5 may be omitted, and the present invention may be embodied in a decorative part in which the pattern 6 is decorated on the surface of the resin molded body 2 by laser drawing. In this case, state change data corresponding to the forming material of the resin molded body 2 is stored in the memory 32.

  -Although the said embodiment embodies the decoration part 1 for motor vehicles in the armrest of a door, you may materialize in parts, such as a console box and an instrument panel, in addition to this.

  Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the embodiments described above are listed below.

  (1) In any one of the means 1 to 5, a temperature acquisition unit that acquires an ambient temperature of the component is further provided, and the defect prediction unit is configured to detect heat given by the laser in the drawing area according to the ambient temperature. A component decoration device characterized by calculating an integrated amount and predicting a defect based on the integrated amount.

  (2) In any one of the means 1 to 5, the irradiation parameter is a parameter for setting the output or scanning speed of the laser, and the laser output is suppressed or the scanning speed is increased at the defective portion. Thus, the irradiation parameter is set as described above.

  (3) In any one of the means 1 to 5, when the two drawing areas overlap or the distance between the adjacent drawing areas is short, the integrated amount of heat given by the laser in the drawing area increases, and the parameter The correction unit corrects the irradiation parameter for a drawing region in which the integrated amount exceeds an upper limit value.

  (4) In any one of means 1 to 3, after the printed layer is added to the surface of the component in a dry state, the pattern is drawn by changing the state of the printed layer by laser irradiation. And the storage unit stores the state change data corresponding to the type of pigment used in the print layer.

  (5) In the technical idea (4), after decorating a decorative film having the printed layer on the surface of the component through an adhesive layer, the laser irradiation is performed.

  (6) In the technical idea (4), the part is a resin molded product, a decorative film having the printed layer is disposed in a mold, and heat and pressure applied during resin molding of the part are used. The component decorating apparatus, wherein the laser irradiation is performed after the printing layer is transferred to the component surface.

  (7) In the technical idea (6), the decorative film is a film in which a clear coat layer is formed in addition to the print layer, and the printed layer and the clear coat layer are formed during resin molding of the component. Is transferred to the surface of the component.

  (8) In the technical idea (6), the laser irradiation is performed before or after the clear coat layer is formed by spraying clear paint on the component surface to protect the print layer. A device for decorating parts.

DESCRIPTION OF SYMBOLS 1 ... Decorative parts for automobiles as parts 3 ... Print layer 5 ... Clear coat layer 6 ... Pattern 10 ... Decoration device 12 ... CCD camera as image acquisition device 13 ... Laser irradiation device 14 ... Control device 19 ... Cooling device 31 ... CPU as defect prediction unit and parameter correction unit
32 ... Memory as a storage unit L ... Laser R1 ... Area as a defective part

Claims (6)

A component decoration device comprising a laser irradiation device that irradiates a laser along a drawing area on a component surface and changes the state of the surface to draw a pattern, and a control device for controlling the laser irradiation device. And
The control device includes:
A storage unit that stores state change data indicating a state change caused by laser irradiation with respect to the forming material of the component surface;
Based on irradiation parameters for setting laser irradiation conditions output by the laser irradiation apparatus, pattern data including information on distance and density of laser irradiation points for drawing the pattern, and the state change data, A defect prediction unit for predicting a defective portion where a drawing defect of a pattern occurs;
A component decorating apparatus comprising: a parameter correction unit that corrects at least one of the irradiation parameter corresponding to the defective part and the pattern data. A cooling device for suppressing an increase in the surface temperature of the component;
The component decoration apparatus according to claim 1, wherein the defect prediction unit predicts a defect according to a driving state of the cooling device. An image acquisition device for acquiring image data by capturing an image of the pattern decorated by laser irradiation;
The parameter correction unit detects, based on the image data, a defective part in which a defective drawing of the pattern has occurred, and corrects at least one of the irradiation parameter and the pattern data corresponding to the defective part. The device for decorating parts according to claim 1 or 2, wherein the device is a decorative device. After the printing layer is transferred to the surface by water pressure transfer and a clear coat layer for protecting the printing layer is formed on the part, laser irradiation is performed to change the state of the printing layer and the clear coating layer. The pattern is drawn,
The state change data according to the type of pigment used for the material of the clear coat layer and the print layer is stored in the storage unit. Device for decorating parts described in 1. The component uses a decorative film having a printed layer and a clear coat layer that protects the printed layer, and after the decorative film is pasted in a dry state on the component surface, or in a dry state on the component surface After the print layer and the clear coat layer of the decorative film are transferred, the pattern is drawn by changing the state of the print layer and the clear coat layer by performing laser irradiation,
The state change data according to the type of pigment used for the material of the clear coat layer and the print layer is stored in the storage unit. Device for decorating parts described in 1. A method of decorating a part that draws a pattern by irradiating a laser along a drawing area on the part surface to change the state of the surface,
Irradiation parameters for setting the irradiation condition of the laser, pattern data including information on the distance and density of the laser irradiation point for drawing the pattern, and state change due to heat applied by the laser on the forming material of the component surface A failure prediction step for predicting a defective portion where a drawing defect of the pattern occurs based on the state change data indicating
A correction step of correcting at least one of the irradiation parameter and the pattern data corresponding to the defective part;
An irradiation method of irradiating the laser in accordance with at least one of the corrected irradiation parameter and the pattern data.