JP2005103382A - Coating film formation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating film with a uniform thickness even in a long coating surface and a wide coating surface in a short time in a coating film formation apparatus. <P>SOLUTION: In the coating film formation apparatus 1, an appropriate amount of gel coat resin g mixed with a curing agent is dropped off onto a coating surface 6a after the whole of the coating surface 6a is coated with a release agent and the state where a film thickness adjustment material 3b on a lower surface of a scraper 3 of a scraper device 2 is contacted with the coating surface 6a is maintained. The scraper device 2 is slid to a direction of white arrow by pulling one vinyl string 8 to a direction of thin arrow while a pair of side surface guide members 4 is advanced along a side guide 7. Thereby, the dropped off gel coat resin g is spread on the whole of the coating surface 6a by an edge 3a of the scraper 3 and is rubbed and cut. The gel coat resin is coated on the whole of the coating surface 6a at uniform thickness and the gel coat coating film G is formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In the present invention, a coating is applied to a flat coating surface with a uniform thickness, or a flat and uniform film of a resin such as a gel-coated resin for FRP (Fiber Reinforced Plastic) is formed. It is related with the coating-film formation apparatus which can be performed.

  When a paint is applied to a product or a gel coat resin for increasing the weather resistance of FRP is applied to an FRP mold, brushes, roller brushes, and sprays are generally used manually. However, when a brush / roller brush is used, the thickness of the applied coating film is very varied, uneven, and takes time. In addition, when spray is used, the loss of material is extremely large, and the coating unit adheres to the coating unit, so that it takes time for cleaning, and the time required for the coating operation is also increased.

Therefore, in the roller-type coating tool described in Patent Document 1, a pair of small-diameter wiper rolls that are in contact with the roller brush to make the paint thickness constant, and the wiper rolls are disposed at almost intermediate positions. And a paint dropping tube for dropping the paint onto the brush. Thereby, the paint dripped from the paint dripping pipe is stopped by the pair of wiper rolls, and does not drop on the surface to be coated, and the paint can be applied with a uniform film thickness with the wiper roll.
Japanese Patent Laid-Open No. 9-38566

  However, in the roller-type paint tool described in Patent Document 1, it is the same in that it takes time to paint, and when the application surface is wide and must be painted with a roller brush many times, There was a problem that the film thickness of the entire coated surface was not uniform. In particular, when a gel coat film for FRP is formed, it is not effective even if the gel coat film is thin for the purpose of preventing the deterioration of FRP by sunlight (ultraviolet rays) and improving the weather resistance. However, since cracks occur, it is extremely important to uniformly control the film thickness to a predetermined thickness.

  Accordingly, an object of the present invention is to provide a coating film forming apparatus capable of obtaining a coating film having a uniform thickness in a short time even on a long coated surface or a wide coated surface.

  A coating film forming apparatus according to a first aspect of the present invention includes a scraper having an edge that forms a precise straight line, a film thickness adjusting material that is attached in the vicinity of both ends of the edge of the scraper, and a distance from the edge perpendicular to the edge. A scraper device having a pair of side guide members attached to the scraper, and a plurality of support members that connect the pair of side guide members and support the pair of side guide members in parallel; A pair of side guides fixed to both side portions having the same height with an interval substantially equal to the width from the outer surface to the outer surface of the pair of side surface guide members, and the scraper device as the pair. And a scraper device sweeping means for smoothly sliding on the coating surface along the side guides.

  According to a second aspect of the present invention, there is provided the coating film forming apparatus according to the first aspect, wherein the scraper device sweeping means is connected to one of the plurality of support members or two at both ends in a balanced manner. Further, it is a string-like member having a length equal to or longer than the side guide.

  According to a third aspect of the present invention, there is provided the coating film forming apparatus according to the first aspect, wherein the scraper device sweeping means is the pair of side guides substantially vertically near the center of gravity of the scraper device of the pair of side surface guide members. It is a pair of handles each protruding outward and attached to the outside.

  According to a fourth aspect of the present invention, there is provided a coating film forming apparatus according to the first or third aspect, wherein a highly rigid correction girder is attached along the scraper, and one or more deflection correction mechanisms are provided in the middle of the scraper. And an adjustment mechanism that allows the scraper to be adjusted in the vertical position together with the deflection correction mechanism.

  According to a fifth aspect of the present invention, there is provided the coating film forming apparatus according to the fourth aspect, wherein the correction girder protrudes outward from the pair of side guides, and the pair of handles as the scraper device sweeping means. It is what.

  According to a sixth aspect of the present invention, there is provided a coating film forming apparatus comprising: a surface plate provided with a heating device inside a flat metal whose upper surface is substantially a coating surface; and a width longer than the coating surface and shorter than the width of the surface plate. A correction digit longer than the width of the surface plate is fixed on the scraper in the vicinity of both ends of the scraper, a film thickness adjusting material is attached in the vicinity of both ends of the edge of the scraper, and the surface plate of the surface plate is in the vicinity of both ends of the correction digit. A pair of slide bars that slide on the edge and a pair of travel guides that sandwich both side surfaces of the surface plate are fixed, and one or more deflection correction mechanisms are attached between the scrapers, and the correction girder And a scraper device provided with an adjustment mechanism capable of adjusting the vertical position together with the scraper, and the correction girder protrudes outward from the side surface of the surface plate. Have a hand, by the scraper device after applying a release agent to the coated surface in which is cured by heating the gel coat resin in the heating apparatus was applied to a gel coat resin thickness required for FRP.

  According to a seventh aspect of the present invention, there is provided a coating film forming apparatus in which the thick glass plate having a uniform thickness is attached to the entire upper surface of the surface plate.

  In the coating film forming apparatus according to the first aspect of the present invention, since the film thickness adjusting material is affixed in the vicinity of both ends of the edge of the scraper, both ends of the scraper apparatus are attached to both side portions having the same height as the coating surface. When the portion is placed, the edge of the scraper while the film thickness adjusting material is attached is lifted from the application surface by the thickness of the film thickness adjusting material. The height (gap) of the edge can be adjusted very precisely. When a gum tape or a cellophane tape is used as the film thickness adjusting material, the height can be adjusted in units of several tens of micrometers.

  Accordingly, with the scraper device placed at one end of the coating surface, an appropriate amount of paint or gel coat resin is dropped over the entire length of the coating surface, and the scraper device is moved between the pair of side guides by the scraper device sweeping means. Then, the dropped paint or the like is spread over the entire application surface at the edge of the scraper and rubbed off, and applied to the entire application surface with a uniform thickness. Here, if any unpainted surface is left on the coated surface, a small amount of paint or the like is dropped on that surface, and the scraper device is swept to the original position by the scraper device sweeping means to form a complete coating film. Can do. During this time, since the paint or the like is dropped and the scraper device is simply reciprocated along the side guides, the operation is completed in a very short time.

  Thus, a coating film forming apparatus capable of obtaining a coating film having a uniform thickness in a short time even on a long coated surface or a wide coated surface.

  The coating film forming apparatus according to the invention of claim 2 uses a string-like member having a length equal to or longer than a side guide connected to one or both ends of the scraper device as the scraper device sweeping means. In this case, with the scraper device placed at one end of the application surface, an appropriate amount of paint or gel coat resin is dropped over the entire length of the application surface, and the string member is pulled from the other end of the application surface. Slide the device along the side guides.

  Here, when the string-like member is tied to both ends of the scraper device, the opposite-side string-like member is fed out in a state of floating in the air so as not to contact the application surface. Then, in the case where an unpainted surface is left on the coated surface, a small amount of paint or the like is dropped on that portion, and the scraper device is reciprocated by pulling the opposite string-like member. It is more preferable that the string-like member is tied to both ends of the scraper device from the viewpoint that it can be reciprocally slid in this way and from the viewpoint that it is easy to balance the scraper device.

  In this way, a coating film forming apparatus capable of obtaining a coating film having a uniform thickness in a short time with a simple structure even on a long coated surface or a wide coated surface.

  According to a third aspect of the present invention, there is provided a coating film forming apparatus including a pair of handles that are mounted so as to protrude outwardly from the pair of side guides substantially vertically in the vicinity of the center of gravity of the scraper apparatus as a scraper apparatus sweeping means. Yes. The traction by the string-like member poses no problem when the width of the scraper (that is, the width of the coating surface) is not wide. However, when the width of the scraper is widened, the small backlash between the scraper device and the pair of side guides. In some cases, the scraper device may turn slightly diagonally, making it difficult to smoothly slide the scraper device.

  Therefore, when the width of the scraper is wide, a pair of handles are attached substantially vertically near the center of gravity of the scraper device, and each person holds the pair of handles, and the scraper device is attached to one end of the coating surface. In a state of being placed, an appropriate amount of paint or gel coat resin is dropped on the entire surface of the application surface, and the two are slid so that the scraper does not become slanted by respiration. In this way, slide to the other end of the application surface, and if there is any unpainted surface on the application surface, drop a small amount of paint, etc., on the application surface in a reverse direction so that the two do not keep pace and the scraper does not slant. Slide to go. Thus, even when the scraper is wide, it can be smoothly slid to form a coating film having a uniform thickness.

  In this way, even when the width of the scraper is wide, the coating film forming apparatus can obtain a coating film having a uniform thickness in a short time with a simple structure.

  In the coating film forming apparatus according to the invention of claim 4, since the scraper is also mainly made of a material such as a metal in order to spread the paint and the like uniformly, when the width of the scraper is wide, the intermediate portion is bent by the weight. In some cases, the required film thickness cannot be obtained because the gap between the edge and the coated surface becomes narrow. Therefore, a high-stiffness girder material is attached to the scraper device along the scraper, and one or more deflection correction mechanisms are attached near the middle of the scraper, and the scraper can be adjusted up and down together with the deflection correction mechanism in the correction girder. A mechanism was provided.

  Accordingly, if the adjustment mechanism is adjusted while measuring the vertical position of the scraper with a gap gauge or the like, the gap between the edge and the coating surface can be adjusted to the required film thickness.

  Thus, even when the width of the scraper is wide, a coating film forming apparatus capable of correcting the bending of the scraper and obtaining a coating film having a uniform thickness in a short time.

  According to a fifth aspect of the present invention, there is provided a coating film forming apparatus in which the correction girder is protruded outward from the pair of side guides to form a pair of handles as a scraper device sweeping means. Since the correction digit is necessary when the width of the scraper is wide, a pair of handles is suitable as the scraper device sweeping means. Therefore, a high-rigidity correction girder is extended to the left and right to form a pair of handles, and a system in which two workers slide smoothly.

  In this way, even when the width of the scraper is wide, a coating film forming apparatus capable of correcting the bending of the scraper and obtaining a coating film with a uniform thickness in a short time with a simple structure.

  The coating film forming apparatus according to the invention of claim 6 is for forming a coating film having a uniform film thickness on a wide area in a short time, and particularly on the surface of the skin plate constituting the door body of the FRP sluice gate. Suitable for forming a gel coat film. Use the part of the correction girder that protrudes from the side of the surface plate to the right and left as the handle, fix the scraper to the correction girder near both ends, and provide a deflection correction mechanism in the middle part to make the edge of the scraper between the film thickness adjusting materials. Adjust the gap with the coated surface evenly. Then, the gel coat resin mixed with the curing agent is dropped onto the application surface, and the scraper is slid on the application surface with two left and right handles, so that the dropped gel coat resin is applied to the application surface at the edge of the scraper. The gel coat film is formed with a uniform thickness over the entire coated surface by being spread and rubbed.

  Here, if any unpainted surface is left on the coated surface, a small amount of gel coat resin is dripped onto the surface, and two people hold the left and right handles, and slide the scraper device to its original position. A coating film can be formed. During this time, the gel coat resin is dropped and the scraper device is simply reciprocated along the side surface of the surface plate, so that the operation is completed in an extremely short time. Furthermore, the gel coat film can be completely cured in a short time by heating with a heating device inside the platen.

  In this way, even when the coated surface is wide, the coating film forming apparatus can correct the bending of the scraper and obtain a gel coat film having a uniform thickness in a short time with a simple structure.

  The coating film forming apparatus according to the invention of claim 7 is a device in which a thick glass plate having a uniform thickness is attached to the entire upper surface of the surface plate, and a gel coat coating film is formed using the surface of the glass plate as an application surface. Is. Since the coated surface of the gel coat film which is cured and adhered to the FRP molded body becomes the surface, when the surface of the glass plate is used as the coated surface, it has a mirror surface finish with extremely excellent smoothness and looks good.

  In this way, the coating film forming apparatus can obtain a gel coat film having a uniform thickness and a smooth surface in a short time.

  Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1
First, Embodiment 1 of the present invention will be described with reference to FIG. 1 and FIG. Embodiment 1 of the present invention shows an example in which the coating film forming apparatus of the present invention is used to form a gel coat film for FRP.

  FIG. 1A is a perspective view showing an overall configuration of a coating film forming apparatus according to a first embodiment of the present invention, and FIG. 1B is a view of a scraper device, which is a main part of the coating film forming apparatus, viewed obliquely from below. It is a perspective view shown. FIG. 2A is an explanatory diagram showing a state in which two gel coat films formed by the coating film forming apparatus according to the first embodiment of the present invention are set in a channel-type FRP female mold, and FIG. The front view which shows the state which shape | molded the FRP molded object to the male type | mold of FRP of this by the hand lay-up method, (c) is a front view which shows the state which turned over the FRP molded object with the male type | mold, and was set to the female type | mold, (d ) Is a perspective view showing a completed channel-type FRP with a gel coat film.

  As shown in FIG. 1A, a coating film forming apparatus 1 according to the first embodiment includes a scraper device 2 having a scraper 3 and a pair of guides that guide the scraper device 2 along an application surface 6a. A side guide 7 and a vinyl string 8 as a string-like member for sliding the scraper device 2 along the side guide 7 are provided. The scraper device 2 is made of a stainless steel plate (SUS304), and as shown in FIG. 1 (b), both ends of the scraper 3 having a straight edge 3a are welded to the lower ends of a pair of side guide members 4. The upper ends of the pair of side guide members 4 are welded and connected to a pair of support members 5. Two pairs of rings 5 a for connecting the vinyl strings 8 are welded to the pair of support members 5.

  In the vicinity of both ends of the lower surface of the scraper 3, several pieces of gum tape 3b as a film thickness adjusting material are laminated and pasted, and the gap between the edge 3a and the coating surface 6a is adjusted to have a required film thickness. A coating film is obtained uniformly. The pair of side guides 7 are firmly fixed to the surface plate 6 having the application surface 6a by a small vise not shown.

  In order to obtain a gel coat film having a uniform thickness using the coating film forming apparatus 1 of the first embodiment having such a configuration, first, the scraper device 2 is placed on one end of the coating surface 6a, and two vinyl strings 8 are attached. Each is pulled from both sides to float from the coating surface 6a, and after a release agent is applied to the entire coating surface 6a, an appropriate amount of gel coat resin g mixed with a curing agent is dropped onto the coating surface 6a. While maintaining the state where the film thickness adjusting material 3b is in contact with the coating surface 6a, the pair of side surface guide members 4 are along the side guides 7, and one vinyl string 8 is pulled in the direction of a thin arrow to thereby remove the scraper device 2. Slide in the direction of the white arrow. As a result, the dropped gel coat resin g is spread over the entire application surface 6a by the edge 3a of the scraper 3 and is rubbed off, and applied to the entire application surface 6a with a uniform thickness to form a gel coat film G. .

  Here, when the coating surface 6a is left uncoated or the like, a small amount of gel coat resin g is dropped on the coated surface 6a, and the other vinyl string 8 is pulled in the opposite direction to slide the scraper device 2 to the original position. Thus, a complete gel coat film G can be formed. During this time, the gel coat resin g is dropped and the scraper device 2 is simply slid back and forth between the side guides 7, so that the operation is completed in an extremely short time.

  Since the curing temperature of the gel coat resin g is 25 ° C. to 45 ° C., it cures even at room temperature in summer. Therefore, if it takes a long time to apply, it is necessary to delay the start of curing with a small amount of curing agent. According to the coating film forming apparatus 1 of aspect 1, since the gel coat film G can be formed in a very short time, a large amount of a curing agent can be added so that curing can be started quickly, and the process can be shortened. In addition, since the surface plate 6 having the coating surface 6a is provided with a heating device, it can be fully cured in a short time by raising the temperature.

  Next, the step of bringing the gel coat film formed in this way into close contact with the outside of the channel-shaped FRP will be described with reference to FIG. As shown in FIG. 2 (a), a cast iron prismatic mold 10 is placed on a surface plate while being separated by a predetermined distance to constitute a female mold. Then, the cured gel coat films G1 and G2 are set in a female mold. The channel-type FRP has three outer surfaces, but the other surface is fixed in close contact with the skin plate of the sluice door body, which is also made of FRP, so there is no need to form a gel coat film.

  In the first embodiment, the surface plate 6 shown in FIG. 1 is used as it is, and the gel coat film G1 obtained by heating and curing the gel coat film G formed here is used as it is on the upper surface (wide surface) of the channel-shaped FRP. A gel coat film G2 obtained by heating and curing a gel coat film formed in the same manner with a coating film forming apparatus configured on a separate platen as a gel coat film is perpendicular to the mold 10 by closely adhering the edge to the gel coat film G1. It is used as a gel coat film on the side surface of the channel type FRP. Since the completely cured gel coat film is inferior in adhesion to the FRP, in order to compensate for this, a glass fiber mat made of ultrafine glass fibers is applied to the gel coat films G1 and G2, and a thermosetting resin is applied from above. .

  On the other hand, as shown in FIG. 2B, a release agent is applied on the channel-shaped male mold 11, and a channel-shaped FRP is formed by a hand lay-up method. That is, a glass fiber cloth is placed on the male mold 11 and a thermosetting resin is applied to the entire surface with a roller brush, and a glass fiber mat is applied thereon and a thermosetting resin is applied to the entire surface with a roller brush. The process is repeated until the FRP layer F1 has a predetermined thickness.

  When the FRP layer F1 reaches a predetermined thickness, as shown in FIG. 2 (c), the male mold 11 is turned over and fitted into the female mold, and as shown by the arrows, the screw-type pressing mechanism is viewed from three directions. The pressure is applied to remove air from the FRP layer F1 to make it dense, and the FRP layer F1 and the gel coat films G1, G2 are brought into close contact with each other. At the same time, the temperature of the female mold and the male mold 11 is raised by a heating device inside the surface plate 6 and heated to about 140 ° C. to thermally cure the thermosetting resin. In this way, when the heat curing and pressurization are completed, the FRP molded body is removed from the mold after it has cooled.

  As shown in FIG. 2 (d), the completed FRP molded body F2 has not only improved strength of the molded body and reduced heat curing time, but also a gel coat film on the surface that is exposed to sunlight when incorporated into a product. Since G1 and G2 are in close contact with each other, an FRP molded body F2 having excellent weather resistance is obtained.

  In this way, according to the coating film forming apparatus 1 of the first embodiment, a gel coat film G having a uniform thickness can be obtained in a short time even on a long coated surface, and is thin and sunlight ( There is no effect of blocking (ultraviolet rays), and it is thick and does not cause cracks, so that it can be brought into close contact with the FRP molded article to improve weather resistance.

Embodiment 2
Next, a second embodiment of the present invention will be described with reference to FIGS. Embodiment 2 of the present invention shows an example in which the coating film forming apparatus of the present invention is used to form a gel coat film having a large area for an FRP skin plate.

  FIG. 3A is a perspective view showing the overall configuration of the coating film forming apparatus according to Embodiment 2 of the present invention, FIG. 3B is a partial perspective view showing the structure near one end of the scraper, and FIG. Sectional drawing which shows the structure of one end vicinity, (d) is explanatory drawing which shows the slide mechanism of a scraper apparatus. FIG. 4 is an explanatory view showing the structure of the deflection correction mechanism of the scraper device.

  As shown in FIG. 3A, the coating film forming apparatus 20 according to the second embodiment includes a large platen 26 made of cast iron having a length of about 5 m, a width of about 3 m, and a height of about 0.7 m. And a scraper device 21 which slides on the board 26 in the longitudinal direction. The scraper device 21 includes a scraper 22 having an edge 22a. However, since the scraper 22 is made of a stainless steel plate, the intermediate portion is bent due to its weight when the length is about 3 m. Therefore, as shown in FIGS. 3B and 3C, a steel square pipe 23 as a correction girder is welded between both ends of the scraper 22 with a thick spacer 27 therebetween, and the square pipe 23 is attached. Three deflection correction mechanisms 30 are provided in the middle of the scraper 22 as fulcrums.

  Further, the square pipe 23 protrudes to the left and right of the surface plate 26 to serve as a handle of the scraper device 21, and a slide bar 24 for sliding the scraper 22 near the left and right ends of the surface plate 26 is shown in FIG. As shown in FIG. 1, a pair of welding guides 25 are welded to the square pipe 23, and a pair of travel guides 25 are welded to the outside of the plate so as to sandwich the left and right side surfaces of the surface plate 26. Then, as shown in FIGS. 3B and 3C, several gum tapes 22 b as film thickness adjusting materials are laminated and pasted near both ends of the lower surface of the scraper 22.

  Next, the detailed structure of the deflection correction mechanism 30 provided in the middle of the scraper 22 will be described with reference to FIG. As shown in FIG. 4, the deflection correction mechanism 30 is formed by welding three stainless steel plates so as to match the angle of the lower surface of the scraper 22 and further welding the tip to the lower surface of the scraper 22. The tip of the deflection correction mechanism 30 may be screwed instead of welding to the lower surface of the scraper 22. Then, by welding the tip of the screw portion 33 of the length adjusting screw 31 as the adjusting mechanism to the apex of the square pipe 23 as the correcting digit and the lower surface of the upper plate of the deflection correcting mechanism 30 that is directly above the apex, The scraper 22 and the square pipe 23 are connected.

  Accordingly, when the buckle 32 of the length adjusting screw 31 is turned in the direction in which the length adjusting screw 31 extends, the deflection correcting mechanism 30 is pushed up with respect to the square pipe 23, and accordingly, the scraper 22 is also moved with respect to the square pipe 23. The distance between the coating surface and the edge 22a increases. On the other hand, if the buckle 32 is rotated in the direction in which the length adjusting screw 31 is contracted, the bending correction mechanism 30 is pulled down with respect to the square pipe 23, and accordingly, the scraper 22 is also lowered with respect to the square pipe 23, The interval between the edges 22a is narrowed.

  In this way, as shown in FIG. 3A, the deflection correcting mechanism 30 provided at three locations is adjusted while measuring the distance between the coating surface 26a and the edge 22a with the gap gauge, so that the entire length of the scraper 22 is obtained. The necessary interval is uniformly obtained.

  In order to obtain a gel coat film having a uniform and wide area using the coating film forming apparatus 20 of the second embodiment having such a configuration, first, the scraper device 21 is placed on one end of the coating surface 26a, and the correction digit is used. One person each has a part projecting to the left and right of the surface plate 26 of the square pipe 23, and an appropriate amount of gel coat resin g mixed with a curing agent is dripped over the entire surface of the coating surface 26a, and the two persons breathe together. Then, the scraper device 21 is slid so that the scraper 22 is not inclined. In this way, when the application surface 26a is slid to the other end, and an unpainted surface or the like is left on the application surface 26a, a small amount of gel coat resin g is dropped on that portion, and the two do not keep pace and the scraper 22 does not become oblique. Slide it in the opposite direction. In this way, even when the width of the scraper 22 is wide, it can be smoothly slid and a gel coat film G having a uniform thickness can be formed.

  Since the curing temperature of the gel coat resin g is 25 ° C. to 45 ° C., it cures even at room temperature in summer. Therefore, if it takes a long time to apply, it is necessary to delay the start of curing with a small amount of curing agent. According to the coating film forming apparatus 20 of aspect 2, since the gel coat film G can be formed in an extremely short time, a large amount of a curing agent can be added so that curing can be started quickly, and the process can be shortened. Since the surface plate 26 includes a heating device, the gel coat film G can be completely cured in a short time by raising the temperature of the application surface 26a.

  Next, an FRP skin plate is formed on the gel coat film thus formed by a hand lay-up method. First, a glass fiber mat made of ultrafine glass fibers is laid on a gel coat film, and a thermosetting resin is applied to the entire surface with a roller brush having a long pattern from above. Next, a glass fiber cloth is spread and a thermosetting resin is applied to the entire surface with a roller brush, and then a glass fiber mat is spread thereon and a thermosetting resin is applied to the entire surface with a roller brush. Repeat until the desired thickness is reached. When a predetermined thickness is reached, a surface plate having a predetermined weight and substantially the same vertical and horizontal dimensions as the surface plate 26 is lifted by a chain block with the flat surface down, and placed on the surface plate 26 from above the FRP layer. .

  Then, a weight is placed on the surface plate so that the necessary pressure is applied to the entire surface of the FRP layer, and at the same time, it is heated to about 140 ° C. by a heating device inside the surface plate 26. As a result, the air from the FRP layer escapes and becomes dense, and when cured at a high temperature, it is cured in a short time and the strength is improved, and the gel coat film with a uniform thickness adheres to the surface of the FRP skin plate and the It blocks light (ultraviolet rays) and improves the weather resistance of the FRP skin plate. In addition, since the FRP channel material for reinforcement is attached to the opposite surface (surface pressed by the surface plate and weight), including the FRP channel material as prepared in the first embodiment, vertically and horizontally, It is not necessary to apply a gel coat film.

  In the second embodiment, the gel coat film G is directly formed on the surface plate 26. However, a thick glass plate is attached to the entire upper surface of the surface plate 26, and this glass plate is used as the coating surface. Thus, an FRP skin plate having a mirror-finished gel coat film excellent in smoothness on the surface is obtained.

  In this way, according to the coating film forming apparatus 20 of the second embodiment, a gel coat film G having a uniform thickness can be obtained in a short time even on a large coating surface, and is thin and sunlight ( There is no effect of blocking (ultraviolet rays), and it is thick and does not cause cracks, so that it can be brought into close contact with the FRP molded article to improve weather resistance.

  In each of the above embodiments, only the example in which the gel coat film G is formed as the coating film has been described. However, the present invention can also be applied to apply a paint with a uniform thickness on the surface of a flat product. it can. For example, a flat iron plate is placed on a surface plate, steel plates of the same thickness are arranged on the left and right sides, and a film thickness adjusting material 3b is attached to both ends of the scraper 3, and the side guides 7 are fixed on the left and right steel plates. If an appropriate amount of paint is dropped onto the surface of the iron plate and the scraper device 2 is slid along the side guide 7, the paint can be applied to the surface of the iron plate with a uniform thickness.

  The structure, shape, quantity, material, size, connection relationship, etc. of other parts of the coating film forming apparatus are not limited to the above embodiments.

FIG. 1A is a perspective view showing an overall configuration of a coating film forming apparatus according to a first embodiment of the present invention, and FIG. 1B is a view of a scraper device, which is a main part of the coating film forming apparatus, viewed obliquely from below. It is a perspective view shown. FIG. 2A is an explanatory diagram showing a state in which two gel coat films formed by the coating film forming apparatus according to the first embodiment of the present invention are set in a channel-type FRP female mold, and FIG. The front view which shows the state which shape | molded the FRP molded object to the male type | mold of FRP of this by the hand lay-up method, (c) is a front view which shows the state which turned over the FRP molded object with the male type | mold, and was set to the female type | mold, (d ) Is a perspective view showing a completed channel-type FRP with a gel coat film. FIG. 3A is a perspective view showing the overall configuration of the coating film forming apparatus according to Embodiment 2 of the present invention, FIG. 3B is a partial perspective view showing the structure near one end of the scraper, and FIG. Sectional drawing which shows the structure of one end vicinity, (d) is explanatory drawing which shows the slide mechanism of a scraper apparatus. FIG. 4 is an explanatory view showing the structure of the deflection correction mechanism of the scraper device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,20 Coating film formation apparatus 2,21 Scraper apparatus 3,22 Scraper 3a, 22a Edge 3b, 22b Film thickness adjusting material 4 Side guide member 5 Support member 6,26 Surface plate 6a, 26a Application surface 7 Side guide 8 String shape Member 23 Correction girder 24 Slide bar 25 Travel guide 30 Deflection correction mechanism 31 Adjustment mechanism g Gel coat resin

Claims (7)

A scraper having an edge that forms a precise straight line; a film thickness adjusting material that is affixed in the vicinity of both ends of the edge of the scraper; and a pair of side guide members that are attached to the scraper perpendicularly to the edge and away from the edge; A scraper device having a plurality of support members that connect the pair of side surface guide members and support the pair of side surface guide members in parallel;
A pair of side guides that are fixed to both side portions having the same height as the application surface at substantially the same distance as the width from the outer surface to the outer surface of the pair of side surface guide members;
A coating film forming apparatus comprising: a scraper device sweeping means for smoothly sliding the scraper device on the coating surface along the pair of side guides.   The scraper device sweeping means is a string-like member having a length equal to or longer than the side guide connected in a balanced manner to one of the ends or two at both ends of the plurality of support members. The coating film forming apparatus according to claim 1.   The scraper device sweeping means is a pair of handles mounted so as to protrude outwardly from the pair of side guides substantially vertically near the center of gravity of the scraper device of the pair of side guide members. The coating film forming apparatus according to claim 1.   A high-rigidity correction girder is attached along the scraper, one or more deflection correction mechanisms are attached in the middle of the scraper, and the deflection correction mechanism is adjustable to the correction girder along with the scraper. The coating film forming apparatus according to claim 1, wherein the coating film forming apparatus is provided.   5. The coating film forming apparatus according to claim 4, wherein the correction digit protrudes outward from each of the pair of side guides to form a pair of handles as the scraper device sweeping means. A platen equipped with a heating device inside a flat metal whose upper surface is almost coated,
A correction digit longer than the width of the surface plate is fixed on the scraper longer than the width of the coating plate and shorter than the width of the surface plate in the vicinity of both ends of the scraper, and a film thickness adjusting material is disposed in the vicinity of both ends of the edge of the scraper. A pair of slide bars that slide on the edge of the surface plate and a pair of travel guides sandwiching both side surfaces of the surface plate are fixed in the middle of the scraper. A scraper device provided with one or two or more deflection correction mechanisms, and an adjustment mechanism capable of adjusting the vertical position of the deflection correction mechanism together with the scraper on the correction digit;
A pair of handles of the scraper device by projecting the correction digits outward from the side surfaces of the surface plate,
A coating film forming apparatus, wherein after a release agent is applied to the application surface, a gel coat resin for FRP is applied to a required thickness by the scraper device, and then the gel coat resin is heated and cured by the heating device.   The coating film forming apparatus according to claim 6, wherein a thick glass plate having a uniform thickness is attached to the entire upper surface of the surface plate.

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