JP6433223B2 - Decorative parts manufacturing method, decorative parts manufacturing equipment - Google Patents

Description

  The present invention relates to a method for manufacturing a decorative part and a manufacturing facility for a decorative part, in which a coating layer having a convex portion is applied to the surface of a decorative region of a part material.

  For automotive interior parts, many decorative parts (for example, console boxes, instrument panels, armrests, etc.) that add decoration to the surface of resin moldings (part materials) to improve design and quality are practical. It has become. As a method of adding decoration to such a decorative part, a pattern or the like is formed on the decorative region of the resin molded body by spraying paint from a spray gun or the like to form a pattern. The technique which adds is proposed (for example, refer patent document 1).

JP 2010-247052 A (FIG. 10 etc.)

  By the way, when the coating layer is applied using the conventional technique described in Patent Document 1, it is possible to apply the coating material not only on the entire surface of the resin molded body but also within a certain range of the surface. Is possible. However, since the paint sprayed from the spray gun is likely to scatter, it becomes difficult to apply the paint only to the application range when the application range becomes local. As a result, since a desired coating film layer cannot be formed, there exists a problem that the designability of a decorative part cannot be improved.

  The present invention has been made in view of the above problems, and its object is to provide a method and a method for producing a decorative part that can enhance designability by enabling application of a paint only to a necessary portion. It is to provide equipment for manufacturing decorative parts.

In order to solve the above-mentioned problem, the invention described in the means 1 includes a coating process in which a coating layer having a convex portion is applied to the surface of a decorative region of a three-dimensional component material. Then, it is a method of manufacturing a decorative part, and before the coating step, a decorative layer forming step of forming a decorative layer having a pattern in the decorative region is performed, and the decorative layer is formed by water pressure. It is a printed pattern layer transferred to the decoration region, and the coating step forms a first coating layer constituting the coating layer by applying a first paint to the entire decoration region. A first coating layer forming step, and a second coating layer that forms the second coating layer constituting the coating layer by applying a second coating to a part of the decorative region from an inkjet nozzle Of the layer forming step, the first coating layer forming step and the second coating layer forming step, the subsequent steps are Before being, and a curing step of curing the first paint and paint applied to out destination of said second coating, said second coating has a high viscosity than the first coating material In the second coating layer forming step, the second coating material is applied to a location immediately above the pattern of the decorative layer according to the darkness of the pattern. The gist of the method of manufacturing a decorative part is as follows.
The invention described in means 2 manufactures a decorative part through a coating process in which a coating layer having a convex portion is applied to the surface of a decorative region of a part material having a three-dimensional shape. It is a method, Comprising: Before the said coating process, the decoration layer formation process which forms the decoration layer which has a pattern in the said decoration area is performed, The said decoration layer is transcribe | transferred to the said decoration area by water pressure It is a printing pattern layer, and the coating step is a first coating layer that forms a first coating layer constituting the coating layer by applying a first coating on the surface of the decorative layer. After the forming step, the first coating layer forming step, the curing step of curing the first coating applied on the surface of the decorative layer, and after the curing step, the first coating layer from the inkjet nozzle Forming a second paint film layer constituting the paint film layer by applying a second paint on the surface of the layer; A coating layer forming step, and in the second coating layer forming step, the second coating is applied to a location directly above the pattern of the decorative layer according to the darkness of the pattern. The gist of the method for producing a decorative part, characterized in that it is applied.
The invention described in the means 3 manufactures a decorative part through a coating process in which a coating layer having a convex portion is applied to the surface of a decorative region of a three-dimensional component material. It is a method, Comprising: Before the said coating process, the decoration layer formation process which forms the decoration layer which has a pattern in the said decoration area is performed, The said decoration layer is transcribe | transferred to the said decoration area by water pressure It is a printing pattern layer, and the coating step includes applying a first paint from the inkjet nozzle to the entire decoration region, thereby forming a first coating layer that forms the first coating layer. A film layer forming step and a second coating layer forming step of forming a second coating layer constituting the coating layer by applying a second paint to a part of the decorative region from the inkjet nozzle. And a later stage of the first coating layer forming step and the second coating layer forming step. Before the first coating and the second coating are cured, the second coating layer forming step includes the step of forming the decorative layer. The gist of the method for producing a decorative part is characterized in that the second paint is applied to the portion directly above the pattern of the pattern in accordance with the darkness of the pattern.
The invention described in means 4 manufactures a decorative part through a coating process in which a coating layer having a convex portion is applied to the surface of a decorative region of a part material having a three-dimensional shape. It is a method, Comprising: Before the said coating process, the decoration layer formation process which forms the decoration layer which has a pattern in the said decoration area is performed, The said decoration layer is transcribe | transferred to the said decoration area by water pressure It is a printing pattern layer, and the coating step is a first coating layer forming step for forming a first coating layer constituting the coating layer by applying a first coating to the entire decoration region. And a second coating layer forming step of forming a second coating layer constituting the coating layer by applying a second coating to a part of the decorative region from an inkjet nozzle, and the first Before the subsequent step of the coating layer forming step and the second coating layer forming step is performed, the first coating is performed. And a curing step of curing the previously applied coating of the second coating, wherein the first coating and the second coating are ultraviolet curable coatings, and the second coating layer forming step Then, the second paint is applied according to the darkness of the pattern to a position immediately above the pattern of the decorative layer, and the decoration region is irradiated with ultraviolet rays in the curing step. Thus, the gist of the method for manufacturing a decorative part is characterized in that the first applied paint or the second applied paint is cured first.
The invention described in the means 5 manufactures a decorative part through a coating process in which a coating layer having a convex portion is applied to the surface of a decorative region of a part material having a three-dimensional shape. It is a method, Comprising: Before the said coating process, the decoration layer formation process which forms the decoration layer which has a pattern in the said decoration area is performed, The said decoration layer is transcribe | transferred to the said decoration area by water pressure It is a printing pattern layer, and the coating step is a first coating layer forming step for forming a first coating layer constituting the coating layer by applying a first coating to the entire decoration region. And a second coating layer forming step of forming a second coating layer constituting the coating layer by applying a second coating to a part of the decorative region from an inkjet nozzle, and the first Before the subsequent step of the coating layer forming step and the second coating layer forming step is performed, the first coating is performed. And a curing step of curing the previously applied coating of the second coating, and in the second coating layer forming step, with respect to the location directly above the pattern of the decorative layer, Applying the second paint according to the darkness of the pattern, taking an image of the pattern of the decorative layer and acquiring image data, and based on the image data, the second A data generation step of generating data for forming a second coating film layer for applying the paint to form the second coating film layer, wherein the part material has at least a part of the decoration region as a curved surface In the second coating layer forming step, based on the second coating layer forming data, the second coating material is applied from the inkjet nozzle, and the decoration region is Drop of the second paint from the inkjet nozzle As direction are orthogonal, the decorative component manufacturing method, characterized in that tilting the parts and materials as its gist.

According to the inventions described in the means 1 to 5 , in the first coating layer forming step, the first coating is applied to the entire decorative region, and in the second coating layer forming step, the coating is applied without scattering. The 2nd coating material is apply | coated to a part of decorating area | region from the inkjet nozzle which can be performed. That is, even if the application range of the second paint becomes local, the second paint can be applied only to a necessary portion by using the ink jet nozzle. As a result, a desired second coating layer, for example, a second coating layer synchronized with the pattern of the decorative layer can be formed, so that the design of the decorative part can be improved.

Incidentally, the decorative layer formed in the decorative layer forming step, for example by pressing the parts and materials in the transfer film in the state floating on the water surface, Ru print pattern layer der to be transferred to the decorative region by water pressure. In this case, the decoration layer which has a pattern can be formed reliably by transferring with water pressure.

  In addition, the coating step includes a first coating layer forming step of applying the first paint on the surface of the decorative layer, and a first coating layer applied on the surface of the decorative layer after the first coating layer forming step. A curing step for curing one coating material and a second coating layer forming step for applying the second coating material on the surface of the first coating layer after the curing step may be included. In this case, since the second coating film layer formed by the second paint is exposed on the outermost layer, the second coating film layer can reliably provide a convex portion on the surface of the coating film layer. The design of decorative parts can be further enhanced.

  However, since the second coating layer is formed only in a part of the decorative region, the contact area with the component material side is small, and there is a possibility of peeling. Therefore, the coating step includes a second coating layer forming step for applying the second paint on the surface of the decorative layer, and a second coating layer applied on the surface of the decorative layer after the second coating layer forming step. A curing step of curing the paint of 2 and a first coating layer forming step of applying the first coating on the surface of the decorative layer and on the surface of the second coating layer after the curing step. Good. If it does in this way, peeling of a 2nd coating-film layer can be prevented by a 2nd coating-film layer being covered with a 1st coating-film layer.

In the second coating layer forming step, apply the second paint portion which becomes directly above the pattern of the pattern of the decorative layer. If it does in this way, a 2nd coating material can be correctly arrange | positioned according to the pattern pattern of a decoration layer. As a result, the brightness of the pattern can be reliably changed by the second paint, so that the design of the decorative part can be further enhanced.

In addition, the 1st coating-film layer formed in a 1st coating-film layer formation process is formed by apply | coating a 1st coating material to the whole decoration area | region, and is formed in the 2nd coating-film layer formation process. A coating-film layer is formed by apply | coating a 2nd coating material to a part of decorating area | region. Here, the types of the first paint and the second paint are not particularly limited, and examples thereof include solid paints, metallic paints, pearl paints, clear paints (colorless and transparent paints in which no pigment is blended), and the like. Can be mentioned. The first paint and the second paint are preferably clear paints. When it does in this way, since a decoration layer can be visually recognized through a 1st coating-film layer and a 2nd coating-film layer, a 1st coating-film layer is formed in a 1st coating-film layer formation process, and a 2nd coating-film layer Even when the second coating layer is formed in the forming step, a visual effect due to the appearance of the decorative layer can be expected. The second paint may have a higher viscosity than the first paint.

  In addition, the first paint and the second paint are ultraviolet curable paints, and in the curing process, the first paint and the second paint are applied first by irradiating the decoration region with ultraviolet light. The paint may be cured. In this case, the first applied paint of the first paint and the second paint is cured in a short time (specifically several seconds) by the light energy generated by the irradiation of ultraviolet rays. Manufacturing efficiency is improved.

  In addition, the method of apply | coating a 1st coating material in a 1st coating-film layer formation process is not necessarily limited. Here, examples of the method of applying the first paint include spraying the first paint from the spray gun to the decoration area, applying the first paint from the ink jet nozzle to the decoration area, and the like. However, in the first coating layer forming step, it is preferable to apply the first paint from the inkjet nozzle to the decoration region. In this case, it is not necessary to prepare the means for applying the first paint separately from the means for applying the second paint (inkjet nozzle). Can be suppressed.

  Moreover, the image acquisition process which image | photographs the pattern which a decoration layer has, and acquires image data, and the 2nd coating film for apply | coating a 2nd coating material and forming a 2nd coating film layer based on image data Including a data generation step of generating layer formation data. In the second coating layer formation step, it is preferable to apply the second paint from the inkjet nozzle based on the second coating layer formation data. If it does in this way, image data will be acquired by photographing a picture by an image acquisition process. As a result, since image data corresponding to the pattern of the pattern can be acquired, the second coating layer synchronized with the pattern of the decorative layer is more accurately based on the data for forming the second coating layer generated from the image data. Can be formed. Therefore, the designability of the decorative part is further enhanced.

  Furthermore, when at least a part of the decoration region of the component material is a curved surface, in the second coating layer forming step, the direction in which the second paint falls from the inkjet nozzle is orthogonal to the decoration region. In addition, it is preferable to incline the component material. If it does in this way, the falling direction of the 2nd coating material from the inkjet nozzle with respect to a decorating area | region can be kept in the state orthogonal by tilting a component raw material in a 2nd coating-film layer formation process. As a result, the second paint can be uniformly applied to the decorative region. Therefore, in the decoration region, it is possible to add a decoration having no coating unevenness and high design properties.

The invention described in means 6 is a facility for manufacturing a decorative part based on the method for manufacturing a decorative part described in any one of the above means 1 to 5 , wherein the ink jet nozzle and the component material are manufactured. The method in the decoration area where the first paint and the second paint are applied, and the falling direction of the first paint and the second paint in a non-contact state with the decoration area A posture changing mechanism that changes the posture of the component material so that the line direction matches, and a control device that controls driving of the ink jet nozzle and the posture changing mechanism. Control for applying the first paint to the entire decoration area, control for applying the second paint to a part of the decoration area on the inkjet nozzle, the first paint and the second First out of paint Cloth paint, a decorative component manufacturing facility and performs a control cured at a stage before the next coating is applied and its gist.

According to the invention described in the means 6 , the control device controls the inkjet nozzle to apply the first paint to the entire decoration area, and causes the inkjet nozzle to apply the second paint to a part of the decoration area. Control is in progress. That is, even when the application range of the second paint becomes local, the second paint can be applied only to a necessary portion by using an inkjet nozzle that can be applied without scattering the paint. As a result, a desired second coating layer, for example, a second coating layer synchronized with the pattern of the decorative layer can be formed, so that the design of the decorative part can be improved.

  The first paint and the second paint are ultraviolet curable paints, and the decorative component manufacturing equipment is provided in the vicinity of the inkjet nozzle and includes an ultraviolet irradiation device that irradiates the ultraviolet curable paint with ultraviolet rays. May be. In this case, the first applied paint of the first paint and the second paint is cured in a short time (specifically several seconds) by the light energy generated by the irradiation of ultraviolet rays. Manufacturing efficiency is improved.

As described above in detail, according to the invention described in claim 1 to 1 4, by allowing the application of the paint only to sites required, it is possible to improve the design of the decorative component.

The schematic sectional drawing which shows the decoration component for motor vehicles of this embodiment. The top view which shows the decorative component for motor vehicles. The schematic block diagram which shows the manufacturing equipment of the decoration component for motor vehicles. Explanatory drawing which shows a 1st clearcoat layer formation process. Explanatory drawing which shows a 1st clearcoat layer formation process. Explanatory drawing which shows the 1st hardening process which hardens a 1st clearcoat layer (1st coating material). Explanatory drawing which shows a 1st hardening process. Explanatory drawing which shows a 2nd clearcoat layer formation process. Explanatory drawing which shows a 2nd clearcoat layer formation process. Explanatory drawing which shows the 2nd hardening process which hardens a 2nd clearcoat layer (2nd coating material). Explanatory drawing which shows a 2nd hardening process. The schematic sectional drawing which shows the decorative component for motor vehicles of other embodiment.

  Hereinafter, an embodiment embodying the present invention 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 resin molded body 2 (component material) having a three-dimensional shape. The automotive decorative component 1 of the present embodiment is an interior component that constitutes an armrest of a door. The surface 3 of the resin molded body 2 is a curved surface that is curved in a convex shape. And the decoration area | region 4 is set in the whole surface 3, and the decoration layer 6 is formed in the decoration area | region 4. As shown in FIG. On the decorative layer 6, a woodgrain pattern 5 is drawn. In addition, the decoration layer 6 of this embodiment is a printing pattern layer transcribe | transferred to the decoration area | region 4 with a hydraulic pressure by pressing the resin molding 2 against the transfer film in the state which floated on the water surface.

  As shown in FIG. 1, a clear coat layer 10 (coating layer) for protecting the decorative layer 6 is formed on the entire top surface of the decorative layer 6. The clear coat layer 10 includes a first clear coat layer 11 (first coating layer) and a second clear coating layer 12 (second coating layer). The first clear coat layer 11 applies the first clear paint L1 (first paint) to the entire decorative region 4 of the resin molded body 2 (specifically, the entire surface of the decorative layer 6). It is formed by coating (see FIGS. 3 to 5). On the other hand, the second clear coat layer 12 has a second clear paint L2 (second paint) with respect to a part of the decorative region 4 (specifically, a part on the surface of the first clear coat layer 11). ) Is applied (see FIGS. 8 and 9). Note that the first clear paint L1 and the second clear paint L2 of the present embodiment are ultraviolet curable paints (UV paints). The second clear coat layer 12 includes a plurality of protrusions 12a having a semicircular cross section. Therefore, the clear coat layer 10 of the present embodiment is a coating layer having a plurality of convex portions (projections 12a) on the surface. Moreover, each protrusion 12a is arrange | positioned in the location which becomes immediately above the part which shows the conduit | pipe of a tree in the grain pattern of the pattern 5. FIG. In this embodiment, the thickness of the decorative layer 6 is set to 0.5 μm or more and 5 μm or less, and the thickness of the first clear coat layer 11 is set to 20 μm or more and 50 μm or less (30 μm in this embodiment), The thickness (height) of the second clear coat layer 12 is set to 5 μm or more and 30 μm or less (10 μm in this embodiment). That is, the thicknesses of the first clear coat layer 11 and the second clear coat layer 12 are larger than the thickness of the decorative layer 6.

  Next, the manufacturing equipment 20 for the automotive decorative component 1 will be described.

  As shown in FIG. 3, the manufacturing facility 20 of the present embodiment applies the clear coat layer 10 to the decorative region 4 of the resin molded body 2 to form the decorative part 1 for an automobile. Equipment to be manufactured. The manufacturing facility 20 includes a hydraulic transfer device (not shown). The water pressure transfer device is provided with a transfer tank for storing treated water. The hydraulic transfer device floats a transfer film (not shown) formed with a decorative layer 6 on a base material on the surface of the treated water, and presses the resin molded body 2 from above the transfer film in this state, Is a device for transferring the decoration layer 6 to the decoration region 4.

  3, 6, 7, 10, and 11, the manufacturing facility 20 includes a CCD camera 21, an inkjet head 22, a paint supply device 23, a fixing jig 24, and a robot 25 (posture change). Mechanism) and an ultraviolet irradiation device 41. The CCD camera 21 photographs the pattern 5 of the decorative layer 6 before the clear coat layer 10 is applied. The CCD camera 21 generates image data based on the captured image and outputs the image data to the CPU 31 of the control device 30.

  An ink jet head 22 shown in FIG. A plurality of inkjet nozzles 26 are arranged in the inkjet head 22 along the longitudinal direction. The paint supply device 23 includes a cartridge 27 filled with a clear paint instead of ink. The cartridge 27 is connected to each inkjet nozzle 26 of the inkjet head 22 via an ink supply tube 28 and the like. Note that the first clear paint L1 and the second clear paint L2 of the present embodiment are both paints supplied from the cartridge 27. That is, the first clear paint L1 and the second clear paint L2 are the same paint. Moreover, the inkjet head 22 is a head which employs, for example, a piezo method, and by dropping a clear paint downward from each inkjet nozzle 26, the decoration area 4 of the resin molded body 2 on which the decoration layer 6 is formed is applied. The clear coat layer 10 is applied.

  Furthermore, the fixing jig 24 is disposed at a location facing the inkjet head 22 and supports the resin molded body 2 in which the decoration layer 6 is formed in the decoration region 4. An arm 25 a of a robot 25 is connected to the fixing jig 24. Then, the robot 25 is in a state where the inkjet nozzle 26 and the decorative region 4 of the resin molded body 2 are not in contact with each other, and the falling direction of the clear paints L1 and L2 and the decorative region 4 to which the clear paints L1 and L2 are applied. The posture of the resin molded body 2 is changed so that the normal line direction at is coincident. In other words, the robot 25 changes the spray angle of the clear paint with respect to the surface of the decorative layer 6 by driving the arm 25 a to change the position and angle of the resin molded body 2.

  The ultraviolet irradiation device 41 shown in FIGS. 6, 7, 10, and 11 is provided in the vicinity of the inkjet nozzle 26 in the upper part of the manufacturing facility 20. The ultraviolet irradiation device 41 is a device that cures the UV paint by irradiating the UV paint (first clear paint L1 or second clear paint L2) applied in the previous step with ultraviolet light. In addition, the ultraviolet irradiation device 41 includes a plurality of UV lamps 42. Each UV lamp 42 is installed horizontally (that is, horizontally), and irradiates the resin molded body 2 with ultraviolet rays. Although each UV lamp 42 of this embodiment is installed horizontally, it may be installed vertically.

  In addition, the robot 25 is in a state where each UV lamp 42 and the decoration region 4 of the resin molded body 2 are not in contact with each other, and the irradiation direction of ultraviolet rays and the normal direction in the decoration region 4 irradiated with ultraviolet rays are The posture of the resin molded body 2 is changed so as to match. In other words, the robot 25 drives the arm 25a to change the position and angle of the resin molded body 2, thereby changing the irradiation angle of the ultraviolet rays with respect to the surface of the first clear coat layer 11 or the surface of the second clear coat layer 12. change.

  Next, the electrical configuration of the manufacturing facility 20 will be described.

  As shown in FIG. 3, the manufacturing facility 20 includes a control device 30 that comprehensively controls the entire facility. The control device 30 is constituted by a known computer including a CPU 31, a memory 32, an input / output port 33, and the like. The CPU 31 is electrically connected to the CCD camera 21, the inkjet head 22, the robot 25, and the ultraviolet irradiation device 41 (see FIGS. 6, 7, 10, and 11), and controls them by various drive signals. .

  The memory 32 stores shape data indicating the three-dimensional shape of the resin molded body 2. The memory 32 stores a control program for controlling the CCD camera 21, the inkjet head 22, the robot 25, and the ultraviolet irradiation device 41. Further, the memory 32 stores in advance data indicating the coating conditions of the inkjet head 22 (the coating time, the spray amount of the clear paints L1 and L2, the thickness of the clear coat layer 10, etc.).

  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 resin material (for example, ABS resin) is prepared. And the decoration layer formation process is performed before the coating process mentioned later, and the decoration layer 6 which has the pattern 5 in the decoration area | region 4 of the resin molding 2 is formed. Specifically, the decoration layer 6 is transferred to the decoration region 4 by water pressure using a hydraulic pressure transfer device (not shown). Next, the operator sets the resin molded body 2 on which the decorative layer 6 is formed on the fixed table 51 (see FIG. 3) with the decorative layer 6 facing upward, and faces the CCD camera 21. Transport to position.

  Next, an image acquisition process is performed, the image 5 which the decoration layer 6 has is image | photographed, and image data is acquired. Specifically, first, the CPU 31 of the control device 30 generates a drive signal and outputs the generated drive signal to the CCD camera 21. Then, the CCD camera 21 captures the picture 5 based on the drive signal output from the CPU 31. Furthermore, the CCD camera 21 generates image data indicating the pattern 5 based on the captured image of the pattern 5 and outputs the generated image data to the CPU 31. Then, the CPU 31 stores the image data acquired from the CCD camera 21 in the memory 32 as image data corresponding to the pattern 5. Thereafter, the operator places the resin molded body 2 on the fixed table 51 on the fixing jig 24 of the robot 25.

  In the subsequent data generation step, the CPU 31 performs first clear coat layer formation data (first coating layer formation data) and second clear coat layer formation data (based on the image data stored in the memory 32). Data for forming the second coating layer). The first clear coat layer formation data is data for forming the first clear coat layer 11 by applying the first clear paint L1, and the second clear coat layer formation data is the second clear paint layer data. Data for forming the second clear coat layer 12 by applying L2. Then, the CPU 31 stores the generated first clear coat layer formation data and second clear coat layer formation data in the memory 32.

  In the subsequent coating process, the clear coat layer 10 is applied and formed on the decorative region 4 of the resin molded body 2. In the coating step, the first clear coat layer forming step (first coating layer forming step), the first curing step, the second clear coat layer forming step (second coating layer forming step), and the second curing step are sequentially performed. To be done.

  In the first clear coat layer forming step, the first clear coat layer is applied by applying the first clear paint L1 from the inkjet nozzle 26 to the entire decoration region 4 (specifically, the entire surface of the decoration layer 6). 11 is formed (see FIGS. 3 to 5). More specifically, the CPU 31 reads shape data stored in the memory 32. Then, the CPU 31 generates a drive signal based on the read shape data, and outputs the generated drive signal to the robot 25. The robot 25 drives the arm 25a based on the drive signal output from the CPU 31 to move the fixing jig 24, whereby the upper surface of the resin molded body 2 supported by the fixing jig 24 (the decoration layer 6). (Surface) is disposed below the inkjet head 22. Here, the gap between the tip of each inkjet nozzle 26 and the upper surface of the resin molded body 2 is held at a constant interval (for example, 3 mm to 5 mm). Next, the robot 25 drives the arm 25a to swing the fixing jig 24 by 45 ° in the clockwise direction so that the upper surface of the resin molded body 2 faces obliquely upward (upper right) (see FIG. 4). To do.

  Thereafter, the CPU 31 reads out the first clear coat layer formation data stored in the memory 32, generates a drive signal based on the read first clear coat layer formation data, and outputs the generated drive signal to the inkjet head 22. Output to. The inkjet head 22 starts dropping (application) of the first clear paint L1 from the inkjet nozzle 26 based on the drive signal output from the CPU 31.

  Next, the robot 25 drives the arm 25a to swing the fixing jig 24 by 90 ° in the opposite direction, that is, in the counterclockwise direction (direction of arrow F1 shown in FIG. 4). 2 (see FIG. 5). In addition, the robot 25 tilts the resin molded body 2 so that the falling direction of the first clear paint L1 from the inkjet nozzle 26 is orthogonal to the decoration region 4. In the present embodiment, the first clear paint L1 is dropped from each inkjet nozzle 26 at a constant drop amount, and the resin molded body 2 swings at an optimum speed according to the drop amount. As a result, the first clear paint L1 is uniformly applied on the surface of the decorative layer 6, and the first clear coat layer 11 is formed. And after formation of the 1st clear coat layer 11 is completed, CPU31 performs control which stops dripping of the 1st clear paint L1 from ink jet nozzle 26. FIG.

  In the first curing process after the first clear coat layer forming process (that is, before the subsequent process of the first clear coat layer forming process and the second clear coat layer forming process described later is performed), an ultraviolet irradiation device The decoration region 4 (the surface of the first clear coat layer 11) is irradiated with ultraviolet rays from the UV lamp 42 of 41. Thereby, among the first clear paint L1 and the second clear paint L2, the paint previously applied, specifically, the first clear paint L1 applied on the surface of the decoration layer 6, Curing is performed before the next clear paint (second clear paint L2) is applied (see FIGS. 6 and 7). More specifically, the CPU 31 generates a drive signal based on the shape data stored in the memory 32 and outputs the generated drive signal to the robot 25. The robot 25 moves the upper surface of the resin molded body 2 (the surface of the first clear coat layer 11) supported by the fixing jig 24 below the ultraviolet irradiation device 41 based on the drive signal output from the CPU 31. Here, the gap between the tip of each UV lamp 42 and the upper surface of the resin molded body 2 is held at a constant interval (for example, 3 mm to 5 mm). Next, the robot 25 swings the fixing jig 24 by 45 ° in the clockwise direction so that the upper surface of the resin molded body 2 faces obliquely upward (upper right) (see FIG. 6).

  The UV lamp 42 is always lit because it takes time for the output of ultraviolet light to stabilize. As a result, the resin molded body 2 positioned below the ultraviolet irradiation device 41 is irradiated with ultraviolet rays. At this point, curing of the first clear paint L1 applied to the resin molded body 2 is started.

  Next, the robot 25 swings the fixing jig 24 by 90 ° in the opposite direction, that is, in the counterclockwise direction (the direction of the arrow F2 shown in FIG. 6), and the upper surface of the resin molded body 2 is obliquely upward. Turn to (upper left) (see FIG. 7). In the present embodiment, ultraviolet rays are irradiated from each UV lamp 42 at a constant irradiation amount, and the resin molded body 2 swings at an optimum speed according to the irradiation amount. As a result, the ultraviolet rays are uniformly irradiated on the surface of the first clear coat layer 11, and the first clear paint L1 is cured.

  In the second clear coat layer forming step after the first curing step, the second clear paint is applied from the inkjet nozzle 26 to a part of the decorative region 4 (specifically, part of the surface of the first clear coat layer 11). The second clear coat layer 12 is formed by applying L2 (see FIGS. 8 and 9). More specifically, the CPU 31 generates a drive signal based on the shape data stored in the memory 32 and outputs the generated drive signal to the robot 25. The robot 25 moves the upper surface (the surface of the first clear coat layer 11) of the resin molded body 2 supported by the fixing jig 24 below the inkjet head 22 based on the drive signal output from the CPU 31. Here, the gap between the tip of each inkjet nozzle 26 and the upper surface of the resin molded body 2 is held at a constant interval (for example, 3 mm to 5 mm). Next, the robot 25 swings the fixing jig 24 by 45 ° in the clockwise direction so that the upper surface of the resin molded body 2 faces obliquely upward (upper right) (see FIG. 8).

  Thereafter, the CPU 31 reads the second clear coat layer formation data stored in the memory 32, generates a drive signal based on the read second clear coat layer formation data, and outputs the generated drive signal to the inkjet head 22. Output to. The ink jet head 22 starts dropping (application) of the second clear paint L2 from the ink jet nozzle 26 based on the drive signal output from the CPU 31. In the present embodiment, the second clear is provided at a position directly above the darkest part in the pattern 5 of the decorative layer 6 (specifically, the part showing the tree conduit in the wood grain pattern of the pattern 5). Paint L2 is applied.

  Next, the robot 25 swings the fixing jig 24 by 90 ° in the opposite direction, that is, in the counterclockwise direction (direction of arrow F3 shown in FIG. 8), and the upper surface of the resin molded body 2 is obliquely upward. Turn to (upper left) (see FIG. 9). In addition, the robot 25 tilts the resin molded body 2 so that the falling direction of the second clear paint L2 from the inkjet nozzle 26 is orthogonal to the decoration region 4. In the present embodiment, the second clear paint L2 is dropped from each inkjet nozzle 26 at a predetermined cycle, and the resin molded body 2 is shaken at an optimum speed according to the cycle at which the second clear paint L2 is dropped. Move. As a result, the second clear paint L2 is applied to a part of the surface of the first clear coat layer 11, and the second clear coat layer 12 is formed. And the part which shows the conduit | pipe of a tree in a grain pattern is emphasized by the 2nd clearcoat layer 12. FIG. In addition, after the formation of the second clear coat layer 12 is completed, the CPU 31 performs control to stop the dropping of the second clear paint L2 from the inkjet nozzle 26.

  In the second curing step after the second clear coat layer forming step, ultraviolet rays are applied from the UV lamp 42 of the ultraviolet irradiation device 41 to the decoration region 4 (the surface of the first clear coat layer 11 and the surface of the second clear coat layer 12). Irradiate. Thereby, the second clear paint applied to a part of the surface of the first clear coat layer 11, specifically, the paint applied later among the first clear paint L 1 and the second clear paint L 2. The paint L2 is cured (see FIGS. 10 and 11). More specifically, the CPU 31 generates a drive signal based on the shape data stored in the memory 32 and outputs the generated drive signal to the robot 25. Based on the drive signal output from the CPU 31, the robot 25 moves the upper surface of the resin molded body 2 (the surface of the clear coat layer 10) supported by the fixing jig 24 below the ultraviolet irradiation device 41. Here, the gap between the tip of each UV lamp 42 and the upper surface of the resin molded body 2 is held at a constant interval (for example, 3 mm to 5 mm). Next, the robot 25 swings the fixing jig 24 by 45 ° in the clockwise direction so that the upper surface of the resin molded body 2 faces obliquely upward (upper right) (see FIG. 10). At this point, curing of the second clear paint L2 applied to the resin molded body 2 is started.

  Next, the robot 25 swings the fixing jig 24 by 90 ° in the opposite direction, that is, in the counterclockwise direction (direction of arrow F4 shown in FIG. 10), and the upper surface of the resin molded body 2 is obliquely upward. (Upper left) is turned (see FIG. 11). In the present embodiment, ultraviolet rays are irradiated from each UV lamp 42 at a constant irradiation amount, and the resin molded body 2 swings at an optimum speed according to the irradiation amount. As a result, the ultraviolet rays are uniformly irradiated on the surface of the first clear coat layer 11 and the surface of the second clear coat layer 12, and the second clear paint L2 is cured. At this time, the clear coat layer 10 including the first clear coat layer 11 and the second clear coat layer 12 is formed. Through the above steps, the automotive decorative component 1 of the present embodiment is manufactured.

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

  (1) In the manufacturing method of the automotive decorative component 1 of the present embodiment, in the first clear coat layer forming step, the first clear paint L1 is applied to the entire decorating region 4 and the second clear coat layer forming step. The second clear paint L2 is applied to a part of the decoration region 4 from the inkjet nozzle 26. That is, even if the application range of the second clear paint L2 becomes local, by using the inkjet nozzle 26 that can be applied without scattering the paint, a necessary part (in this embodiment, the wood grain pattern of the picture 5) It is possible to apply the second clear paint L2 only to a portion directly above the portion showing the tree conduit in FIG. As a result, it is possible to form a desired second clear coat layer 12, for example, a convex portion (projection 12 a of the second clear coat layer 12) corresponding to a wood conduit in the wood grain pattern of the picture 5, and the actual natural Since the same three-dimensional decoration as a tree can be formed, the designability of the automotive decorative component 1 can be enhanced. Moreover, since the clearcoat layer 10 which protects the decoration layer 6 is formed by performing a 1st clearcoat layer formation process and a 2nd clearcoat layer formation process, the external appearance quality of the decorative component 1 for motor vehicles is lengthened. Can be maintained over a period of time.

  (2) In the present embodiment, the second clear coat layer 12 formed by the second clear paint L2 is exposed on the outermost layer, and on the surface of the clear coat layer 10 formed immediately above the decorative layer 6 The convex part (projection 12a) is in an exposed state. As a result, it becomes possible to reproduce the tactile sensation close to the real (natural wood grain) of the pattern 5 of the decorative layer 6 by the convex portion, and thus further enhance the design of the decorative part 1 for an automobile. Can do.

  (3) In this embodiment, in a state where the orientation of the resin molded body 2 is changed so that the falling direction of the clear paints L1 and L2 and the normal direction in the decorating region 4 coincide, The clear paints L1 and L2 are dropped on the surface. In this way, the clear paints L1 and L2 do not scatter and the clear paints L1 and L2 are surely applied to the decorating region 4 as in a conventional spray gun or other coating device. Cost can be reduced. In addition, since the first clear paint L1 and the second clear paint L2 of the present embodiment are the same paint, the material cost of the paint can be further reduced.

  (4) In the first clear coat layer forming step of the present embodiment, the gap between the tip of the inkjet nozzle 26 and the decorative layer 6 formed in the decorative region 4 of the resin molded body 2 is maintained at a constant interval. The first clear paint L1 dropped from the inkjet nozzle 26 can be uniformly applied to the surface of the decorative layer 6. Therefore, it is possible to add decoration with high design properties without application unevenness to the resin molded body 2.

  In addition, you may change this embodiment as follows.

  -In the coating process of the said embodiment, after performing the 1st clear coat layer formation process which apply | coats the 1st clear coating material L1 on the surface of the decorating layer 6, and forms the 1st clear coat layer 11, The decorative part 1 for automobiles is formed by performing the second clear coat layer forming step of applying the second clear paint L2 on the surface of the first clear coat layer 11 to form the second clear coat layer 12. It was. However, in the coating process, a second clear coat layer forming process is performed in which the second clear paint L2 is applied onto the surface of the decorative layer 61 to form the second clear coat layer 62 (second coat layer). Then, the first clear paint L1 is applied on the surface of the decorative layer 61 and the surface of the second clear coat layer 62 to form the first clear coat layer 63 (first coat layer). You may form the decorative component 60 for motor vehicles by performing a coating layer formation process (refer FIG. 12). In this case, since the second clear coat layer 62 is covered with the first clear coat layer 63, it is possible to prevent the second clear coat layer 62 from peeling off.

  -In the 2nd clear coat layer formation process of the said embodiment, it becomes immediately above the darkest part (specifically, the part which shows the conduit | pipe of a tree in the grain pattern of the pattern 5) in the pattern of the pattern 5 of the decoration layer 6 The second clear paint L2 was applied to the place. However, the second clear paint L2 may be applied to a thin portion (specifically, a portion other than the conduit of the tree) in the pattern of the picture 5.

  In the above embodiment, the first clear paint L1 and the second clear paint L2 are the same paint, but the first clear paint L1 and the second clear paint L2 may be changed to different paints. For example, the first clear paint L1 and the second clear paint L2 may be changed to different paints, and the viscosity of the second clear paint L2 may be higher than the viscosity of the first clear paint L1. In this case, since the contact area with the resin molded body 2 side is small, the second clear coat layer 12 having a high possibility of peeling is formed by the second clear paint L2 having a high viscosity. 2 Peeling of the clear coat layer 12 can be prevented.

  -In above-mentioned embodiment, although the decoration layer 6 was transcribe | transferred to the decoration area | region 4 of the resin molding 2 by the hydraulic transfer method, it is not necessarily limited to this, For example, other methods, such as an inkjet method, are used. The decorative layer 6 may be formed.

  In the decorative part 1 for an automobile of the above embodiment, the pattern 5 of the wood grain pattern is drawn on the decoration layer 6, but the pattern of the pattern indicating the carbon fiber fabric and the aluminum panel subjected to the hairline processing are shown. Other patterns such as a pattern pattern may be drawn.

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

  -Although the manufacturing equipment 20 of the said embodiment manufactured the decorative component 1 for motor vehicles which is a decorative component, it is not necessarily limited to this but manufactures decorative components, such as a household appliance and furniture. You may do.

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

  (1) The method for producing a decorative part according to means 1, wherein the first coating layer and the second coating layer are clear coat layers that protect the decorative layer.

  (2) The method for producing a decorative part according to the first aspect, wherein, in the second coating layer forming step, the second paint is applied to a dark portion of the pattern.

  (3) A method for producing a decorative part, characterized in that, in the means 1, in the second coating layer forming step, the second paint is applied to a thin portion of the pattern.

  (4) In the means 1, in the coating step, the first coating layer forming step of applying the first paint on the surface of the decorative layer, and the first coating layer forming step, The curing step of curing the first coating applied on the surface of the decorative layer, and the second coating applying the second coating on the surface of the first coating layer after the curing step. A film layer forming step, wherein the first coating material is an ultraviolet curable coating material, and in the curing step, the surface of the decorative layer is irradiated with ultraviolet rays to cure the first coating material. A method for producing a decorative part.

  (5) In the means 1, in the coating step, the first coating layer forming step of applying the first paint on the surface of the decorative layer, and the first coating layer forming step, A first curing step, which is the curing step for curing the first coating, and the second coating layer formation in which the second coating is applied on the surface of the first coating layer after the first curing step. The manufacturing method of the decorative component characterized by including the process and the 2nd hardening process which hardens a said 2nd coating material after a said 2nd coating-film layer formation process.

  (6) In the technical idea (5), the second coating material is an ultraviolet curable coating material, and in the second curing step, the surface of the first coating layer is irradiated with ultraviolet rays to thereby form the second coating material. A method for producing a decorative part, characterized by curing the paint.

  (7) In the means 2, the second coating material has a higher viscosity than the first coating material.

  (8) A facility for producing a decorative part in the means 2, wherein the first paint and the second paint are the same paint.

  (9) A decorative part comprising a part material having a three-dimensional shape and a coating layer formed on the surface of the part material and having a convex portion on the surface, wherein the decoration area The coating layer is formed by applying a first paint to the entire decoration region, and the decoration from the inkjet nozzle. A decorative part comprising a second coating film layer formed by applying a second paint to a part of a region.

DESCRIPTION OF SYMBOLS 1,60 ... Decorative parts for automobiles as decorative parts 2 ... Resin molded bodies 4 as part materials ... Decorative areas 5 ... Patterns 6, 61 ... Decorative layers 10 ... Clear coat layers 11 as coating layers, 63 ... 1st clear coat layer 12 and 62 as the 1st coat layer ... 2nd clear coat layer 20 as the 2nd coat layer ... Equipment for decorating parts 25 ... Robot 26 as posture change mechanism ... Inkjet nozzle 30 ... Control device 41 ... UV irradiation device L1 ... first clear paint L2 as first paint ... second clear paint as second paint

Claims (14)

It is a method of manufacturing a decorative part through a coating process of coating and forming a coating layer having a convex part on the surface, for a decorative region of a three-dimensional component material,
Before the coating step, perform a decorative layer forming step of forming a decorative layer having a pattern in the decorative region,
The decorative layer is a printed pattern layer transferred to the decorative region by water pressure,
The coating process includes
A first coating layer forming step of forming a first coating layer constituting the coating layer by applying a first coating to the entire decoration region;
A second coating layer forming step of forming a second coating layer constituting the coating layer by applying a second coating to a part of the decorative region from an inkjet nozzle;
Before the subsequent process of the first coating layer forming process and the second coating layer forming process is performed, the coating applied first out of the first coating and the second coating is performed. A curing step of curing,
The second paint has a higher viscosity than the first paint,
In the second coating layer forming step, the second paint is applied to a portion directly above the pattern of the decorative layer according to the darkness of the pattern. A manufacturing method for parts. It is a method of manufacturing a decorative part through a coating process of coating and forming a coating layer having a convex part on the surface, for a decorative region of a three-dimensional component material,
Before the coating step, perform a decorative layer forming step of forming a decorative layer having a pattern in the decorative region,
The decorative layer is a printed pattern layer transferred to the decorative region by water pressure,
The coating process includes
A first coating layer forming step of forming a first coating layer constituting the coating layer by applying a first coating on the surface of the decorative layer;
A curing step of curing the first coating applied on the surface of the decorative layer after the first coating layer forming step;
After the curing step, a second coating layer forming step for forming a second coating layer constituting the coating layer by applying a second coating on the surface of the first coating layer from an inkjet nozzle. When
Including
In the second coating layer forming step, the second paint is applied to a location directly above the pattern of the decorative layer according to the darkness of the pattern.
A method for producing a decorative part characterized by the above. It is a method of manufacturing a decorative part through a coating process of coating and forming a coating layer having a convex part on the surface, for a decorative region of a three-dimensional component material,
Before the coating step, perform a decorative layer forming step of forming a decorative layer having a pattern in the decorative region,
The decorative layer is a printed pattern layer transferred to the decorative region by water pressure,
The coating process includes
A first coating layer forming step of forming a first coating layer constituting the coating layer by applying a first coating from the inkjet nozzle to the entire decoration region;
A second coating layer forming step of forming a second coating layer constituting the coating layer by applying a second coating to a part of the decorative region from the inkjet nozzle;
Before the subsequent process of the first coating layer forming process and the second coating layer forming process is performed, the coating applied first out of the first coating and the second coating is performed. Curing process to cure and
Including
In the second coating layer forming step, the second paint is applied to a location directly above the pattern of the decorative layer according to the darkness of the pattern.
A method for producing a decorative part characterized by the above. It is a method of manufacturing a decorative part through a coating process of coating and forming a coating layer having a convex part on the surface, for a decorative region of a three-dimensional component material,
Before the coating step, perform a decorative layer forming step of forming a decorative layer having a pattern in the decorative region,
The decorative layer is a printed pattern layer transferred to the decorative region by water pressure,
The coating process includes
A first coating layer forming step of forming a first coating layer constituting the coating layer by applying a first coating to the entire decoration region;
A second coating layer forming step of forming a second coating layer constituting the coating layer by applying a second coating to a part of the decorative region from an inkjet nozzle;
Before the subsequent process of the first coating layer forming process and the second coating layer forming process is performed, the coating applied first out of the first coating and the second coating is performed. Curing process to cure and
Including
The first paint and the second paint are ultraviolet curable paints,
In the second coating layer forming step, the second paint is applied according to the darkness of the pattern, to a location directly above the pattern of the decorative layer.
In the curing step, the first applied paint and the second applied paint are cured by irradiating the decoration area with ultraviolet rays.
A method for producing a decorative part characterized by the above. It is a method of manufacturing a decorative part through a coating process of coating and forming a coating layer having a convex part on the surface, for a decorative region of a three-dimensional component material,
Before the coating step, perform a decorative layer forming step of forming a decorative layer having a pattern in the decorative region,
The decorative layer is a printed pattern layer transferred to the decorative region by water pressure,
The coating process includes
A first coating layer forming step of forming a first coating layer constituting the coating layer by applying a first coating to the entire decoration region;
A second coating layer forming step of forming a second coating layer constituting the coating layer by applying a second coating to a part of the decorative region from an inkjet nozzle;
Before the subsequent process of the first coating layer forming process and the second coating layer forming process is performed, the coating applied first out of the first coating and the second coating is performed. Curing process to cure and
Including
In the second coating layer forming step, the second paint is applied according to the darkness of the pattern, to a location directly above the pattern of the decorative layer.
An image acquisition step of acquiring image data by photographing the pattern of the decorative layer;
A data generating step of generating data for forming a second coating layer for applying the second paint and forming the second coating layer based on the image data;
Including
In the component material, at least a part of the decoration region is a curved surface,
In the second coating layer forming step, based on the data for forming the second coating layer, the second coating material is applied from the inkjet nozzle, and the decoration region is supplied from the inkjet nozzle. The component material is tilted so that the direction in which the second paint falls is orthogonal.
A method for producing a decorative part characterized by the above. The method of manufacturing a decorative part according to any one of claims 2 to 5, wherein the second paint has a viscosity higher than that of the first paint. The coating process includes
The first coating layer forming step of applying the first paint on the surface of the decorative layer;
After the first coating layer forming step, the curing step of curing the first paint applied on the surface of the decorative layer;
6. The method according to claim 1 , further comprising: a second coating layer forming step of applying the second coating material on a surface of the first coating layer after the curing step. The manufacturing method of the decorative component as described in a term . The coating process includes
The second coating layer forming step of applying the second paint on the surface of the decorative layer;
After the second coating layer forming step, the curing step of curing the second paint applied on the surface of the decorative layer;
2. The first coating layer forming step of applying the first paint on the surface of the decorative layer and on the surface of the second coating layer after the curing step. , 3 to 5 A method for manufacturing a decorative part according to any one of claims 5 to 5 . The said 1st coating film layer formation process apply | coats the said 1st coating material to the said decoration area | region from the said inkjet nozzle , The any one of Claim 1 , 2 , 4 , 5 , 8 characterized by the above-mentioned. Manufacturing method for decorative parts. The first paint and the second paint are ultraviolet curable paints,
Wherein in the curing step by irradiating ultraviolet rays to the decorative area, according to claim 1 to 9, characterized in that curing the coating material applied to out destination of said first paint and the second paint The manufacturing method of the decorative component of any one of Claims 1. An image acquisition step of acquiring image data by photographing the pattern of the decorative layer;
Generating a second coating layer forming data for forming the second coating layer by applying the second paint based on the image data,
The said 2nd coating-film layer formation process apply | coats the said 2nd coating material from the said inkjet nozzle based on the said 2nd coating-film layer formation data, The any one of Claim 1 thru | or 4 or 8 characterized by the above-mentioned. The manufacturing method of the decorative component of 1 item | term. In the component material, at least a part of the decoration region is a curved surface,
In the second coating layer forming step, the as dropping direction of the second coating material from the inkjet nozzles onto the decorative region are orthogonal claim 11, characterized in that tilting the parts and materials The manufacturing method of the decorative component as described in 2. A facility for producing a decorative part based on the method for producing a decorative part according to any one of claims 1 to 12 ,
The first paint and the second paint are applied in a falling direction, and the first paint and the second paint are applied in a state where the inkjet nozzle and the decoration region of the component material are not in contact with each other. A posture changing mechanism that changes the posture of the component material so that the normal direction in the decoration region matches,
A control device for controlling the drive of the inkjet nozzle and the posture changing mechanism,
The control device controls the ink jet nozzle to apply the first paint to the entire decoration area, controls the ink jet nozzle to apply the second paint to a part of the decoration area, and A facility for producing a decorative component, characterized in that control is performed to harden a paint previously applied out of the first paint and the second paint at a stage before the next paint is applied. The first paint and the second paint are ultraviolet curable paints,
The equipment for manufacturing a decorative part according to claim 13 , further comprising an ultraviolet irradiation device that is provided in the vicinity of the inkjet nozzle and irradiates the ultraviolet curable coating material with ultraviolet rays.