JP5550527B2 - Laser processing equipment - Google Patents

Description

  The present invention relates to a laser processing apparatus that performs laser processing by irradiating a laser onto an outer surface of a workpiece.

  In automotive interior parts, many decorative parts (for example, console boxes, instrument panels, armrests, etc.) that add decoration to the outer surface of the resin molded body (work) in order to improve design and quality are practical. It has become. As a method of adding decoration to such a decorative part, for example, by performing injection molding (in-mold molding) in a state where a resin material to be a resin molded body and a decorative film are arranged in a mold, A method for forming a resin molded body having a film attached to the outer surface has been proposed.

  However, in the above method, since the protruding portion of the film from the resin molded body becomes an excess region (burr), it is necessary to perform a cutting process (trimming) for cutting off the burr after the film is attached. Therefore, it is conceivable to trim the burrs of the film using a laser processing apparatus (for example, see Patent Documents 1 to 3) that performs laser processing by irradiating the outer surface with laser. Note that the conventional techniques described in Patent Documents 1 to 3 perform laser processing on a relatively simple workpiece such as a printed circuit board or a semiconductor wafer. For this reason, if dust and smoke generated from the workpiece during laser processing are sucked by the air suction device located on the side of the workpiece, the dust and smoke attached to the workpiece can be reliably removed.

Japanese Patent Laying-Open No. 2007-185685 (FIG. 1 etc.) JP 2008-213022 (FIG. 2 etc.) JP 2002-316292 A (FIG. 1 etc.)

  However, since the resin molded body to be trimmed has a relatively complicated three-dimensional shape, even if dust and smoke generated from the resin molded body at the time of laser processing are sucked using the above air suction device, the dust and smoke Part of the resin remains in the resin molding without being sucked by the air suction device. As a result, dust remaining on the resin molded body may contaminate the resin molded body. Moreover, since the smoke remaining on the resin molded body rises and hides the workpiece, it may be difficult to irradiate the laser at a specific part of the workpiece or the irradiation intensity of the laser may vary. In addition, dust and smoke remaining on the resin molded body may adhere to the main body and lens of the laser irradiation apparatus and reduce the laser irradiation intensity.

  The present invention has been made in view of the above problems, and its purpose is to reliably attract dust and smoke generated from a workpiece during laser processing by an air suction device, thereby preventing dust and smoke from adhering to the workpiece. An object of the present invention is to provide a laser processing apparatus that can prevent the above.

In order to solve the above-mentioned problem, the invention described in claim 1 is a laser processing apparatus that performs laser processing by irradiating a laser to an outer surface of a three-dimensional workpiece, and is positioned below the workpiece and A support means for supporting the work and having a suction port, a laser irradiation device for irradiating the laser to the work supported by the support means, and a support means installed above the support means and supported by the support means an air ejection device for ejecting air against the workpiece that is, an air suction device for sucking from below the workpiece dust and smoke generated from the workpiece during laser machining through the suction port together with the air, the Flow rate adjustment that adjusts the flow rate of the air ejected from the air ejection device according to the position where laser processing is performed on the outer surface And a stage, the flow rate adjusting means, when performing laser processing for an internal recess in which the workpiece has, together with the relatively large flow rate of the air ejected from the air jet device, to the external of said recess The gist of the present invention is a laser processing apparatus characterized by relatively reducing the flow rate of the air ejected from the air ejection apparatus when performing laser processing .

  According to the first aspect of the present invention, air is ejected to the work supported by the support means by the air ejection device installed above the support means, and dust and smoke generated from the work are sucked together with the air. Is sucked by the air suction device from below the workpiece. As a result, an air flow from the upper side to the lower side of the workpiece is formed, so that dust and smoke are reliably sucked together with the air by the air suction device without being sprinkled sideways. As a result, even if the workpiece has a relatively complicated three-dimensional shape, the adhesion of dust to the workpiece is prevented, so that the contamination of the workpiece due to the adhesion of dust can be prevented. In addition, because smoke is prevented from adhering to the workpiece, it is difficult to irradiate a laser at a specific part of the workpiece due to the rising of smoke adhering to the workpiece. It is possible to prevent variation. In addition, since dust and smoke remaining on the workpiece are also prevented from adhering to the laser irradiation device, it is possible to prevent a decrease in laser irradiation intensity due to adhesion of dust and smoke.

Further, according to the invention described in claim 1, when performing laser processing with respect to the interior of the dust and smoke are likely to stay recesses by relatively large air flow ejected from the air ejection apparatus Therefore, the flow rate of the air guided to the concave portion increases, and dust and smoke can be reliably removed from the concave portion. On the other hand, when laser processing is performed on the outside of the recess where dust and smoke are difficult to stay, the flow rate of air ejected from the air ejection device is relatively small, so dust and smoke can be removed from the outside of the recess. It is not necessary to waste air when removing. Therefore, dust and smoke can be efficiently sucked by the air suction device.

According to a second aspect of the present invention, in the first aspect , the air suction device further includes a suction amount adjusting unit that adjusts a suction amount of the air, and the suction amount adjusting unit converts the air suction amount into the air ejection amount. The gist is to make it larger than the flow rate of the air ejected from the apparatus.

According to the second aspect of the present invention, since the amount of air sucked by the air suction device is larger than the flow rate of air ejected from the air ejection device, dust and smoke are reliably suctioned together with air by the air suction device. be able to.

According to a third aspect of the present invention, in the first or second aspect , the support means includes a support jig that supports the workpiece, and a positioning table that positions the support jig. The gist of the invention is that it has a plurality of suction ports that penetrate in the vertical direction and allow the air to pass from the workpiece side to the air suction device side.

According to the third aspect of the invention, since the positioning table has a plurality of suction ports, the air guided from the workpiece side passes through the suction ports and flows to the air suction device side. That is, since the air flow from the upper side to the lower side of the workpiece does not have to be obstructed by the positioning table, dust and smoke can be more reliably sucked together with the air by the air suction device.

  Here, examples of the suction port include a circular through-hole and a rectangular through-hole (such as a slit). Examples of the suction port include a filter. The filter is formed in a mat shape by laminating fibers together.

As described in detail above, according to the first to third aspects of the present invention, the dust and smoke generated from the workpiece during laser processing are reliably sucked by the air suction device, thereby preventing the dust and smoke from adhering to the workpiece. A laser processing apparatus that can be prevented can be provided. In particular, according to the first aspect of the present invention, dust and smoke can be efficiently sucked by the air suction device.

The perspective view which shows the decoration component for motor vehicles of this embodiment. (A) is the sectional view on the AA line of FIG. 1, (b) is the sectional view on the BB line of FIG. The schematic block diagram which shows a trimming apparatus. The schematic perspective view which shows the decorative component for motor vehicles, and the positioning table.

  Hereinafter, an embodiment in which the laser processing apparatus of the present invention is embodied in a trimming apparatus will be described in detail with reference to the drawings.

  As shown in FIG. 1 and FIG. 2, the automotive decorative component 1 includes a three-dimensional resin molded body 2 (workpiece). The automotive decorative component 1 of the present embodiment is a decorative panel that covers the upper surface of an armrest provided on a door of an automobile. Moreover, the resin molding 2 has the workpiece | work surface 3a (outer surface) which is a convex curved surface, and the workpiece | work back surface 3b which is a concave curved surface located in the other side of the workpiece | work surface 3a. Further, the resin molded body 2 has a first switch mounting hole 6 (first hole) for mounting a power window switch (not shown) and a second switch mounting hole 7 for mounting a door lock switch (not shown). (Second hole). The first switch mounting hole 6 penetrates the bottom surface 5a of the recess 5 opened on the workpiece surface 3a and the workpiece back surface 3b (see FIG. 2A). The second switch mounting hole 7 passes through the work surface 3a and the work back surface 3b (see FIG. 2B).

  A decorated region 4 is set on the surface (work surface 3a) excluding the switch mounting holes 6 and 7 in the resin molded body 2, and the film 10 is attached to the decorated region 4. The film 10 of the present embodiment is formed by applying a paint to a transparent resin such as an acrylic resin, and the surface is decorated with a wood grain pattern. Further, a clear coat layer (not shown) for protecting the film 10 is formed on the surface of the film 10.

  Next, the trimming device 20 will be described.

  As shown in FIG. 3, the trimming device 20 is a device that performs laser processing by irradiating the workpiece surface 3 a of the resin molded body 2 with a laser L <b> 1. Specifically, the trimming device 20 is a device that cuts off an excess region (burr) that protrudes from the decorated region 4 in the film 10 when the film 10 is attached to the decorated region 4 of the resin molded body 2. It is.

  The apparatus main body 21 constituting the trimming apparatus 20 includes a base frame 22 and a box-shaped cabinet 23 provided on the base frame 22. Further, the trimming device 20 includes a support device 30 (support means), a laser irradiation device 40, an air ejection device 50, and an air suction device 60. The support device 30 is positioned below the resin molded body 2 and supports the resin molded body 2. The support device 30 includes a support base 31, a transport base 32, a positioning table 33, and a support jig 34. The support base 31 has a rectangular plate shape, and is arranged in parallel with the installation surface of the apparatus main body 21 in the cabinet 23. By driving a servo motor (not shown), the support base 31 is attached to the laser irradiation apparatus 40. It approaches or separates. The transport table 32 is disposed on the support table 31 and is moved in the length direction of the support table 31 by driving a servo motor (not shown).

  As shown in FIGS. 3 and 4, the positioning table 33 is placed on the transport table 32 and positions the support jig 34. The positioning table 33 is moved in the width direction of the support base 31 (the direction of the arrow F1 shown in FIG. 3) by driving a servo motor (not shown). The positioning table 33 is provided with a plurality of slits 35 (suction ports). The slits 35 are arranged at equal intervals and penetrate the positioning table 33 in the thickness direction so that the air A1 passes from the resin molded body 2 side to the air suction device 60 side.

  As shown in FIG. 3, the support jig 34 is placed on the positioning table 33, and the resin molded body 2 is placed with the work surface 3 a facing upward and the work back surface 3 b facing downward. It is designed to support horizontally. The support jig 34 includes a support plate 36 placed on the positioning table 33. A plurality of protruding pieces 37 protrude from the upper surface of the support plate 36 in a state of being separated from each other. Then, the tip of each protruding piece 37 abuts on the workpiece back surface 3 b of the resin molded body 2, whereby the resin molded body 2 is supported by the support jig 34 in a state of being separated from the upper surface of the support plate 36. That is, the support jig 34 is a region different from the decorated region 4 in the resin molded body 2 and supports a region excluding the switch mounting holes 6 and 7 on the work back surface 3b.

  As shown in FIG. 3, the laser irradiation device 40 is installed on the upper surface of the cabinet 23 and above the resin molded body 2 supported by the support jig 34. Moreover, the laser irradiation apparatus 40 is arrange | positioned so that the workpiece | work surface 3a of the resin molding 2 may be faced, and irradiates the laser L1 with respect to the workpiece | work surface 3a. More specifically, the laser irradiation device 40 irradiates the laser L1 along the outer edge portion of the resin molded body 2 so as to cut off an excess region protruding from the outer edge portion of the resin molded body 2 in the film 10. It has become. Further, the laser irradiation device 40 irradiates the laser L 1 along the opening end of the first switch mounting hole 6, thereby cutting off the surplus region protruding from the inner surface of the first switch mounting hole 6 in the film 10. ing. Further, the laser irradiation device 40 irradiates the laser L <b> 1 along the opening end of the second switch mounting hole 7, thereby cutting off the surplus region that protrudes from the inner surface of the second switch mounting hole 7 in the film 10. ing.

  3 controls the laser generator (not shown) that generates the laser L1, the laser deflector (not shown) that deflects the laser L1, and the laser generator and the laser deflector. Each has a laser control unit (not shown). The laser deflecting unit is an optical system in which a lens (not shown) and a reflecting mirror (not shown) are combined. By changing the positions of the lens and the reflecting mirror, the irradiation position and focal position of the laser L1 are changed. It comes to adjust. That is, the laser irradiation apparatus 40 of the present embodiment is a galvanomirror type laser irradiation apparatus. Further, the laser control unit controls the irradiation time modulation, irradiation intensity modulation, irradiation area modulation, and the like of the laser L1.

  The air ejection device 50 shown in FIG. 3 ejects air A1 to the resin molded body 2 supported by the support device 30 to thereby generate dust (resin molded resin 2 of the resin molded body 2) during laser processing. Etc.) and a device that blows away smoke. The air ejection devices 50 are installed above the support device 30, specifically, above the cabinet 23, and a pair is arranged with the laser irradiation device 40 interposed therebetween. Further, in the air ejection device 50, the ejection port of the air A <b> 1 is arranged toward the decorated area 4 of the resin molded body 2. In the present embodiment, the ejection direction of the air A1 is inclined by about 20 ° with respect to the irradiation direction (vertical direction) of the laser L1 irradiated by the laser irradiation device 40. Furthermore, the air pressure of the air A1 is preferably set to, for example, 150 kPa or more, particularly 400 kPa or more. In this way, dust and smoke can be reliably prevented from staying in the recess 5 of the resin molded body 2.

  The air suction device 60 shown in FIG. 3 is a device that sucks dust and smoke blown away by the air A1 from below the resin molded body 2 through the slit 35 together with the air A1. The air suction device 60 includes a suction duct 61, a hose 62, and a dust collecting portion 63. The suction duct 61 is accommodated in the cabinet 23 and opened at the upper end. In the suction duct 61, the transport table 32, the positioning table 33, and a part of the support table 31 are accommodated. Therefore, the upper end of the suction duct 61 is located above the upper surface of the positioning table 33. The suction duct 61 sucks air A <b> 1 including dust and smoke that has passed through the slit 35. Further, both ends of the hose 62 are connected to the lower end portion of the suction duct 61 and the upper end portion of the dust collection portion 63, respectively, and the suction duct 61 and the dust collection portion 63 are communicated with each other. The dust collection unit 63 is installed on a support plate (not shown) provided at the bottom of the base frame 22. The dust collection unit 63 sucks air A1 containing dust and smoke through the hose 62, and removes dust from the sucked air A1.

  Next, the electrical configuration of the trimming apparatus 20 will be described.

  As shown in FIG. 3, the trimming apparatus 20 includes a control device 70 that controls the entire apparatus. The control device 70 is constituted by a known computer including a CPU 71, a memory 41, an input / output port 42, and the like. The CPU 71 is electrically connected to the transport table 32, the positioning table 33, the laser irradiation device 40, the air ejection device 50, and the air suction device 60, and controls them by various drive signals. Specifically, the CPU 71 performs control for displacing the position of the resin molded body 2 supported by the support device 30. For example, the CPU 71 outputs a workpiece movement signal to a controller (not shown) of a servo motor for the transport table 32 and moves the support jig 34 in the plane direction (length direction of the support table 31) (position control). Is supposed to do. Further, the CPU 71 outputs a workpiece movement signal to a controller (not shown) of a servo motor for the positioning table 33, and performs control (position control) for moving the support jig 34 in the plane direction (width direction of the support base 31). To do. Further, the CPU 71 outputs a support table movement signal to a controller (not shown) of the servo motor for the support table 31, and moves the support table 31 (and the resin molded body 2 on the support table 31) to the laser irradiation device 40. Control to approach or move away. As a result, the irradiation distance of the laser L1 is maintained at a distance (a constant in this embodiment) that allows the surplus region to be excised. Further, the CPU 71 outputs a laser irradiation signal to the controller of the laser irradiation device 40 and performs control to irradiate the laser L1 from the laser irradiation device 40. The memory 41 stores in advance data indicating the laser irradiation conditions (laser L1 irradiation time, laser L1 irradiation intensity, laser L1 irradiation position, etc.) of the laser irradiation apparatus 40.

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

  First, a resin molded body 2 molded into a predetermined three-dimensional shape using a thermoplastic resin material (for example, ABS resin) is prepared. More specifically, a mold (not shown) consisting of a first mold and a second mold is prepared. Next, after the film 10 is disposed on the molding surface of the first mold, the peripheral edge of the film 10 is sandwiched between the first mold and the second mold. Thereby, the cavity of the same shape and the same volume as the resin molding 2 is comprised inside. In this state, a predetermined amount of the resin material is heated and filled into the cavity, and then cooled, whereby the resin molded body 2 to which the film 10 is adhered is molded in-mold. Thereafter, when the first mold and the second mold are separated from each other, the resin molded body 2 to which the film 10 is attached is taken out.

  However, since the part (excess area | region) clamped by the 1st type | mold and the 2nd type | mold in the film 10 is unnecessary, you have to excise an excess area | region after in-mold shaping | molding. Therefore, a trimming method for cutting off the surplus area of the film 10 will be described.

  First, a support process is performed, and a region different from the decorated region 4 in the resin molded body 2 is supported by the support jig 34 by an operator. Specifically, a plurality of protruding pieces 37 provided on the support jig 34 are brought into contact with the work back surface 3b of the resin molded body 2 to support the resin molded body 2 on the support jig 34 (FIG. 3). reference).

  In the subsequent excision step, the surplus region is excised by irradiating the laser L1 from the laser irradiation device 40. More specifically, the CPU 71 converts image data indicating the outer edge of the resin molded body 2 into laser irradiation data (processing position information) for performing laser irradiation. Next, the CPU 71 stores the converted laser irradiation data in the memory 41. Further, the CPU 71 sets laser irradiation parameters (laser L1 irradiation position, focal position, irradiation angle, irradiation area, irradiation time, irradiation intensity, etc.) used for laser irradiation.

  Then, the CPU 71 excises the surplus area by performing laser irradiation based on the laser irradiation data stored in the memory 41. Specifically, the CPU 71 reads the laser irradiation data for the outer edge portion stored in the memory 41, generates a laser irradiation signal based on the read laser irradiation data, and uses the generated laser irradiation signal as a laser irradiation device. Output to 40. The laser irradiation device 40 irradiates the laser L1 along the outer edge portion of the resin molded body 2 based on the laser irradiation signal output from the CPU 71. As a result, the surplus region that protrudes from the outer edge portion of the resin molded body 2 in the film 10 is removed.

  Next, the CPU 71 reads the laser irradiation data for the opening end of the first switch mounting hole 6 stored in the memory 41, generates a laser irradiation signal based on the read laser irradiation data, and generates the generated laser irradiation signal. Is output to the laser irradiation device 40. The laser irradiation device 40 irradiates the laser L 1 along the opening end of the first switch mounting hole 6 based on the laser irradiation signal output from the CPU 71. As a result, the surplus region that protrudes from the inner surface of the first switch mounting hole 6 in the film 10 is removed.

  Further, the CPU 71 reads the laser irradiation data for the opening end of the second switch mounting hole 7 stored in the memory 41, generates a laser irradiation signal based on the read laser irradiation data, and generates the generated laser irradiation signal. Output to the laser irradiation device 40. The laser irradiation device 40 irradiates the laser L <b> 1 along the opening end of the second switch mounting hole 7 based on the laser irradiation signal output from the CPU 71. As a result, the surplus region that protrudes from the inner surface of the second switch mounting hole 7 in the film 10 is removed.

  The laser control unit of the laser irradiation device 40 irradiates the laser L1 from the laser generation unit, and controls the laser deflection unit according to the type of laser irradiation data. By this control, the irradiation position and focal position of the laser L1 are changed, and the film 10 sublimates or embrittles the outer edge portion of the resin molded body 2 and the portions that coincide with the opening ends of the switch mounting holes 6 and 7, so Excise the area.

  In the cutting process, dust (chips and the like) is generated from the film 10. Moreover, since laser processing is performed on the film 10 made of a resin material such as acrylic resin, smoke is also generated from the film 10. For this reason, CPU71 performs control which starts the ejection of the air A1 from the air ejection apparatus 50 in synchronization with laser processing, and removes dust and smoke from the resin molding 2 with the air A1. Specifically, the CPU 71 outputs an air ejection signal to the air ejection device 50 at the same time as the irradiation of the laser L1 from the laser irradiation device 40 is started, and ejects the air A1 from the air ejection device 50. Take control. Further, the CPU 71 performs control to terminate the output of the air ejection signal to the air ejection device 50 and terminate the ejection of the air A1 from the air ejection device 50 at the same time as the irradiation of the laser L1 is terminated.

  Further, the CPU 71 performs control to adjust the flow rate of the air A1 ejected from the air ejection device 50 in accordance with the position where the laser processing is performed on the workpiece surface 3a. More specifically, the CPU 71 performs laser processing on the inside of the recess 5 (the first switch mounting hole 6 in this embodiment), that is, the read laser irradiation data is for the opening end of the first switch mounting hole 6. In the case of the laser irradiation data, control is performed to relatively increase the flow rate of the air A1 ejected from the air ejection device 50 via a flow rate adjusting inverter (not shown). Further, the CPU 71 performs laser processing on the outside of the recess 5 (in this embodiment, the outer edge portion of the resin molded body 2 and the second switch mounting hole 7), that is, the read laser irradiation data is for the outer edge portion or the second edge portion. In the case of the laser irradiation data for the opening end of the two switch mounting hole 7, control is performed to relatively reduce the flow rate of the air A1 ejected from the air ejection device 50 via the flow rate adjusting inverter. That is, the CPU 71 and the flow rate adjusting inverter have a function as flow rate adjusting means.

  Further, the CPU 71 performs control to start suction of the air A1 (including dust and smoke) by the air suction device 60 in synchronization with the ejection of the air A1 from the air ejection device 50. Specifically, the CPU 71 outputs air suction signals to the air suction device 60 at the same time as the ejection of the air A1 is started, and performs control to start suction of the air A1 by the air suction device 60. At this time, the air A <b> 1 passes through the slit 35 → the suction duct 61 → the hose 62 → the dust collecting part 63 in this order. And the dust collection part 63 comes to remove dust from the attracted air A1. Further, the CPU 71 performs control for adjusting the amount of air A1 sucked by the air suction device 60. Specifically, the CPU 71 performs control to make the suction amount of the air A1 by the air suction device 60 larger than the flow rate of the air A1 ejected from the air ejection device 50 via a suction amount adjusting inverter (not shown). Then, the CPU 71 performs control to increase the suction amount of the air A1 via the suction amount adjustment inverter and controls to decrease the flow rate of the air A1 as the control to increase the flow rate of the air A1 is performed. Is performed, control is performed to reduce the suction amount of the air A1 through the suction amount adjusting inverter. That is, the CPU 71 and the suction amount adjusting inverter have a function as suction amount adjusting means. Thereafter, the CPU 71 completes the output of the air suction signal to the air suction device 60 and terminates the suction of the air A1 by the air suction device 60 simultaneously with the end of the ejection of the air A1.

  Further, the CPU 71 reads out the laser irradiation data stored in the memory 41, generates a work movement signal based on the read out laser irradiation data, and uses the generated work movement signal as a servo motor for the carriage 32 and a positioning table 33. Output to the servo motor. The carriage 32 and the positioning table 33 are driven based on the workpiece movement signal output from the CPU 71, thereby displacing the position of the servo motor and moving the support jig 34 in the plane direction. Further, the CPU 71 reads out the laser irradiation data stored in the memory 41, generates a support base movement signal based on the read laser irradiation data, and uses the generated support base movement signal as a servo motor controller for the support base 31. Output to. The support base 31 is driven based on the support base movement signal output from the CPU 71 to bring the support base 31 (and the resin molded body 2 on the support base 31) closer to or away from the laser irradiation device 40. . As a result, the irradiation position of the laser L1 with respect to the resin molded body 2 is changed, and the irradiation distance of the laser L1 with respect to the decoration area 4 is kept constant. And the laser irradiation apparatus 40 irradiates laser L1 based on the laser irradiation signal output from CPU71 in the state by which the irradiation distance was kept constant. The automotive decorative part 1 is manufactured through the above steps.

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

  (1) In the trimming device 20 of the present embodiment, air A1 is ejected from the resin molding body 2 by the air ejection device 50, and dust and smoke generated from the resin molding body 2 together with the air A1 are below the resin molding body 2. The air is sucked by the air suction device 60. Thereby, since the flow of the air A1 from the upper side to the lower side of the resin molded body 2 is formed, the dust and smoke are surely sucked together with the air A1 by the air suction device 60 without being sprinkled sideways. Is done. As a result, even in the case of the present embodiment in which the resin molded body 2 has a complicated three-dimensional shape, the adhesion of dust to the resin molded body 2 is prevented, so that the resin molded body 2 caused by the adhesion of dust can be prevented. Dirt can be prevented. Moreover, since the adhesion of the smoke to the resin molded body 2 is prevented, the laser L1 can be irradiated aiming at a specific portion of the resin molded body 2 due to the smoke adhering to the resin molded body 2 rising. It is possible to prevent difficulties and variations in the irradiation intensity of the laser L1. In addition, since the air A1 flows below the resin molded body 2, dust and smoke remaining on the resin molded body 2 are also prevented from adhering to the laser irradiation device 40 installed above the resin molded body 2. Further, it is possible to prevent a decrease in irradiation intensity of the laser L1 due to adhesion of dust and smoke.

  (2) In the present embodiment, the resin molded body 2 is separated from the upper surface of the support plate 36 by the tips of the projecting pieces 37 constituting the support jig 34 coming into contact with the work back surface 3b of the resin molded body 2. Thus, it is supported by the support jig 34. For this reason, dust and smoke generated at the time of laser processing do not stay on the work back surface 3b side of the resin molded body 2 and are guided outside through the gap between the resin molded body 2 and the support plate 36 together with the air A1. become. That is, the air A1 containing dust and smoke can be reliably sucked by the air suction device 60.

  (3) Since the clear coat layer which protects the film 10 is formed in the automotive decorative component 1 of the present embodiment, the appearance quality of the automotive decorative component 1 can be maintained over a long period of time. Even if the surface of the film 10 is uneven, the unevenness of the film 10 is flattened by the clear coat layer, so that dirt such as dust accumulated on the unevenness can be prevented.

  In addition, you may change this embodiment as follows.

  The trimming device 20 of the above embodiment has been used to remove the generated dust and smoke when dust and smoke are generated during the removal of burrs generated by in-mold molding. However, the trimming device 20 may be used to remove the generated dust and smoke when dust and smoke are generated at the time of excision of the surplus film generated by attaching the film by vacuum / pressure forming.

  In the above embodiment, the flow rate of the air A1 ejected from the air ejection device 50 is changed according to the position where the laser processing is performed on the workpiece surface 3a, but instead, the flow rate and wind direction of the air A1 Etc. may be changed.

  In the trimming device 20 of the above-described embodiment, the two air ejection devices 50 are installed, but the number of the air ejection devices 50 may be changed to one, for example. Conversely, the number of installed air ejection devices 50 may be increased.

  In the above embodiment, the clear coat layer is formed so as to protect the surface of the film 10, but the clear coat layer may be omitted.

  In the automobile decorative component 1 according to the above embodiment, the surface of the film 10 is decorated with a wood grain pattern, but the decoration can be changed as appropriate. Examples of the decoration include a decoration of a pattern showing a carbon fiber fabric, a decoration of a pattern showing an aluminum panel subjected to hairline processing, and the like in addition to the decoration of a wood grain pattern.

  -In above-mentioned embodiment, although the decorative component 1 for motor vehicles was actualized to the armrest of a door, you may materialize to components, such as a console box and an instrument panel, in addition to this.

  -The laser processing apparatus of the said embodiment was the trimming apparatus 20 which cuts off the excess area | region which protruded from the to-be-decorated area | region 4 in the film 10. FIG. However, the laser processing apparatus forms a coating film on the decorated area 4, performs laser irradiation, selectively processes the coated film, and forms a plurality of laser treated parts, thereby decorating the decorated area 4. A laser decoration device that draws a pattern imitating the base pattern may be used.

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

  (1) In Claim 2, the workpiece has a workpiece surface on which the recess is formed and a workpiece back surface located on the opposite side of the workpiece surface, and the workpiece penetrates the bottom surface of the recess and the workpiece back surface. A first hole and a second hole penetrating the work surface and the work back surface, and the flow rate adjusting means is configured to control the flow of the air ejected from the air ejecting device when performing laser processing on the first hole. A laser having a relatively large flow rate and a relatively small flow rate of the air ejected from the air ejection device when performing laser processing on the outer edge portion of the workpiece and the second hole. Processing equipment.

  (2) In the technical idea (1), when the laser processing apparatus attaches a film to the decorated area set on the outer surface, the surplus area that protrudes from the decorated area in the film The trimming device for cutting off, the laser irradiation device, by irradiating a laser, the excess region that protrudes from the outer edge portion of the workpiece in the film, and the protruding from the inner surface of the first hole in the film The laser processing apparatus characterized by excising the surplus area | region and the said surplus area | region which protruded from the inner surface of the said 2nd hole in the said film.

  (3) In Claim 4, the air suction device includes a suction duct that sucks dust and smoke generated from the workpiece together with the air, and the suction duct opens at an upper end and is positioned inside the positioning duct. A laser processing apparatus, wherein a table is accommodated, and an upper end of the suction duct is positioned above an upper surface of the positioning table.

2 ... Resin molded body 3a as work ... Work surface 5 as surface ... Recess 20 ... Trimming device 30 as laser processing device ... Support device 33 as support means ... Positioning table 34 ... Support jig 35 ... As suction port Slit 40 ... Laser irradiation device 50 ... Air ejection device 60 ... Air suction device 71 ... CPU as flow rate adjusting means and suction amount adjusting means
A1 ... Air L1 ... Laser

Claims (3)

A laser processing apparatus that performs laser processing by irradiating a laser on the outer surface of a three-dimensional workpiece,
A support means positioned below the workpiece to support the workpiece and having a suction port;
A laser irradiation apparatus for irradiating the laser beam to the workpiece supported by the support means;
An air ejection device installed above the support means and configured to eject air to the workpiece supported by the support means;
An air suction device for sucking dust and smoke generated from the workpiece during laser processing together with the air from below the workpiece through the suction port ;
A flow rate adjusting means for adjusting a flow rate of the air jetted from the air jetting device according to a position where laser processing is performed on the outer surface ;
The flow rate adjusting unit relatively increases the flow rate of the air ejected from the air ejection device and performs laser processing on the outside of the recess when performing laser processing on the inside of the recess of the workpiece. In addition, the flow rate of the air ejected from the air ejecting device is relatively reduced . A suction amount adjusting means for adjusting the suction amount of the air by the air suction device;
The laser processing apparatus according to claim 1 , wherein the suction amount adjusting unit makes the suction amount of the air larger than a flow rate of the air ejected from the air ejection device. The support means includes a support jig for supporting the workpiece, and a positioning table for positioning the support jig,
3. The laser processing apparatus according to claim 1, wherein the positioning table has a plurality of suction ports that pass through in a thickness direction and through which the air passes from the workpiece side to the air suction device side.

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