JP5866725B2 - Stripe coat coating apparatus and stripe coat coating method - Google Patents

Description

The present invention relates to a coating apparatus and a coating method for performing stripe coat coating on edge portions of members in a structure such as a ship and each stripe coat portion of a welded portion.

  2. Description of the Related Art Conventionally, in ship structures such as bulk carriers, stripe coating is performed for securing a coating thickness at a welded portion, an edge portion of a member, or the like. With this stripe coat coating, the coating thickness is secured at the welded part, the edge of the member, etc., and the occurrence of rust and the like is suppressed (see “Stripe coat (Stripe “Coating” refers to a coating that extends in the form of stripes at the edges and welds of the plate material constituting the hull). Stripe coat coating is not performed on the entire flat surface of the hull such as a flat surface, but is applied to edges and welds where mechanical coating is difficult. It is done by painting.

  On the other hand, since 2008, the International Maritime Organization (IMO) has adopted the application of Performance Standard for Protective Coatings (PSPC) to the ballast tank and the double bottom of the bulk carrier. According to this coating standard, the application site of the above-mentioned stripe coating is applied to each welded portion, built-up longge, snip, stiffener, bracket, air hole, manhole, slot, edge portion of a color plate, etc. (this specification and claims) In the document in the range, the portions to which the stripe coat coating is applied are collectively referred to as “stripe coat portion”). In addition, the entire surface coating and the stripe coat coating are determined to be applied twice.

  FIG. 6 is a drawing showing a stripe coat portion in a ship bottom portion taking a ship as an example. According to the above coating standards, the stripe coat S is applied to the fillet welded portion 101 of the built-up longge 100 provided on the ship bottom, the fillet welded portion 101 such as the edge portion 103 of the face plate 102, the partition wall 104, and the edge portion. It is necessary to apply to many parts such as 105.

  Moreover, as shown in FIG. 7, this stripe coating S is very useful for the fillet welded portion 106 on the back side of the face plate 102 provided at the upper end of the longe 100, the lower edge portion 107 of the face plate 102, etc. It is also necessary to apply to parts where workability is poor.

  However, as described above, stripe coat painting is manual work by the operator's brush painting work, so the expansion of the stripe coat painting application range greatly increases man-hours, greatly increasing work time and enormous labor. Has occurred. For example, in the case of a bulk carrier having a captain of about 290 m, the distance that requires stripe coating may be about 40 to 50 km. In addition, since the entire surface coating and the stripe coat coating are alternately applied twice, a very long time and labor are required for the coating operation.

  In the case of brush coating, uneven coating tends to occur, and it is difficult to ensure an appropriate film thickness. Therefore, time and labor are required to ensure proper coating film quality.

  In view of this, an invention has been proposed in which the above-described strip coat coating operation can be performed quickly with a stable quality that satisfies the coating standard in the construction of a ship to which a new coating standard is applied.

  For example, in an apparatus for performing brush painting by manual work, there is one in which a pressure-feed paint spreads uniformly over the brush portion and can be applied without unevenness (see, for example, Patent Document 1).

JP 2011-41891 A

  However, stripe coating by brush coating as described above is difficult to increase significantly by the operator even if the invention described in Patent Document 1 is used, and the application range is very wide. It is difficult to drastically reduce the work time of striped coat coating, and it is difficult to reduce work time and labor.

  In addition, in the case of brush coating, it is difficult to obtain a uniform coating thickness (for example, an optimum stripe coating coating thickness of about 100 to 150 μm per time) depending on the skill level of the operator. As described above, the quality of the stripe coat coating becomes unstable. Therefore, there is a possibility that it may be difficult to maintain a healthy coating film after service, or that early rusting may occur.

  In addition, the invention described in Patent Document 1 adjusts the amount of paint to be applied by an operator's manual operation, thereby causing uneven coating and paint dripping, etc., and obtaining stable coating quality. A high level of skill is required. In particular, when stripe coating is applied to the back side of the face plate 102 as shown in FIG. 7 above, the operator has experienced the supply amount of the paint and the adjustment of the feed amount of the brush in order to prevent the paint from dripping. In order to obtain a stable coating quality, a very high level of skill is required.

  However, in recent years, the number of skilled workers who can apply stripe coats with a uniform coating thickness by brush coating has been greatly reduced, and it is very difficult to efficiently perform stripe coat painting that ensures appropriate coating quality. It has become.

  Therefore, an object of the present invention is to provide a stripe coat coating apparatus that can efficiently perform stripe coat coating instead of brush coating.

In order to achieve the above object, a stripe coat coating apparatus of the present invention is a stripe coat coating apparatus for performing stripe coat coating on a surface to be coated of each welded portion or edge portion in a structure, wherein the stripe coat coating device is used. A paint pump that supplies the paint at a predetermined pressure; a gun part that controls the spraying of the paint supplied from the paint pump; and a paint spray nozzle that sprays the paint by operating the gun part. , along with keeping the distance between the coated surface and the nozzle tip of the scan trie flop coating unit constant, and face each other across the paint jetting direction of the paint spray nozzle along the extent of the paint sprayed from the paint injection nozzle It has a spray guide that spreads out. With this configuration, by applying the stripe coating while moving the tip of the spray guide in the coating progress direction in contact with the surface to be coated with the stripe coating, the coating spray nozzle and the coating surface of the stripe coating portion A uniform coating thickness can be obtained while maintaining the distance of the coating, and scattering of the coating can be suppressed by the spray guide, so that it is possible to efficiently perform stripe coat coating ensuring appropriate coating quality. .

  Further, the spray guide includes two fillet welded part spray guides that are moved along two surfaces forming a coated surface in the fillet welded part, and the fillet welded part spray guide is The moving direction corner that contacts the surface to be coated may be formed in a curved surface. With this configuration, coating quality can be achieved without damaging the coated surface at the corners of the curved surface by performing stripe coating while moving the fillet welded spray guide along the fillet weld. It is possible to efficiently perform striped coat coating that ensures the above.

  The spray guide includes two edge portion-compatible spray guides that are moved along two surfaces forming the coating surface in the edge portion, and the edge portion-compatible spray guide abuts on the coating surface. A concave traveling direction guide portion may be formed. If configured in this way, stripe coating can be applied to ensure the coating quality by moving the edge-compatible spray guide in the direction of travel along the edges of built-up longages and stiffeners. It can be done efficiently.

The paint spray nozzle may include a variable mechanism capable of changing a paint spray angle of the paint spray nozzle . If configured in this way, the angle of the paint sprayed from the paint spray nozzle is adjusted to an angle suitable for the surface to be coated in various parts where stripe coating is applied, and the spray guide is used to maintain the distance from the surface to be coated. can do. Thereby, the stripe coat coating which ensured appropriate coating-film quality in various stripe coat parts can be performed efficiently. For example, even an upward stripe coating can be performed efficiently.

  The paint pump may be a low-pressure airless pump, and the airless pump may include a regulator that reduces pulsation generated from the difference between the primary pressure and the secondary pressure. If comprised in this way, the low-pressure airless pump compared with the pump of the general shipbuilding industry supplies the low-pressure paint which suppressed the pulsation which generate | occur | produces in a paint pump to a paint injection nozzle, and is based on the paint injected from a paint injection nozzle. The width of the stripe coating can be kept constant, dust scattered from the spray guide can be reduced, and the stripe coating can be performed with the paint sprayed along the spray guide to ensure the coating film quality.

On the other hand, the stripe coat coating method of the present invention is a stripe coat coating method for applying a stripe coat to a surface to be coated of each welded portion or edge portion in a structure, and applies the paint applied to the stripe coat to a predetermined pressure. The spraying direction of the paint spray nozzle for spraying the paint is made to oppose the surface to be coated, and the spray guide provided at the tip of the paint spray nozzle is used to The paint sprayed from the paint spray nozzle is applied along the spread of the spray guide while keeping the distance from the surface to be coated constant. With this configuration, by applying the stripe coating while moving the tip of the spray guide in the coating progress direction in contact with the surface to be coated with the stripe coating, the coating spray nozzle and the coating surface of the stripe coating portion A uniform coating thickness can be obtained while maintaining the distance of the coating, and scattering of the coating can be suppressed by the spray guide, so that it is possible to efficiently perform stripe coat coating ensuring appropriate coating quality. .

Further, the spray guide may be applied while being moved along two surfaces that form the surface to be coated of the fillet welded portion or the edge portion. If comprised in this way, stripe coat coating which ensured coating-film quality can be performed efficiently by performing stripe coat coating, moving a spray guide along a fillet weld part or an edge part.

Moreover, you may make it paint by changing the coating-material spray angle with respect to the to-be-coated surface of the said coating-material spray nozzle. If configured in this way, the angle of the paint sprayed from the paint spray nozzle is adjusted to an angle suitable for the surface to be coated in various parts where stripe coating is applied, and the spray guide is used to maintain the distance from the surface to be coated. can do. Thereby, the stripe coat coating which ensured appropriate coating-film quality in various stripe coat parts can be performed efficiently. For example, even an upward stripe coating can be performed efficiently.

  According to the present invention, the distance between the coating surface and the paint spray nozzle is always constant, so that the coating quality can be ensured with a uniform coating thickness, and stripe coating can be efficiently performed to greatly reduce man-hours. This makes it possible to improve work efficiency and quality.

It is a perspective view which shows the stripe coat coating apparatus which concerns on one Embodiment of this invention. It is drawing of the fillet weld part corresponding type spray guide shown in FIG. 1, (a) is a front view, (b) is a bottom view, (c) is a side view. It is a perspective view which shows the use condition of the fillet weld part corresponding | compatible spray guide shown in FIG. It is drawing of the edge part corresponding | compatible spray guide exchanged with the fillet weld part corresponding spray guide shown in FIG. 2, (a) is a front view, (b) is a bottom view, (c) is a side view. It is a perspective view which shows the use condition of the edge part corresponding | compatible spray guide shown in FIG. It is a perspective view which shows the stripe coat part in the ship bottom part of a ship. It is a perspective view which expands and shows the VII part shown in FIG. 6 at another angle.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. In the following embodiment, the stripe coat coating apparatus 1 including the fillet welded part spray guide 30 will be described based on FIGS. 1 to 3, and the fillet welded part spray guide 30 based on FIGS. The edge part corresponding type spray guide 50 to be replaced will be described.

  As shown in FIG. 1, a stripe coat coating apparatus 1 according to this embodiment includes a low-pressure airless coating machine 2 having a piston-type paint pump 3 that is driven using high-pressure air. The paint pump 3 is supplied with high-pressure air from a high-pressure air supply hose 5 connected to a moisture separator 4 provided in the upper portion, and this high-pressure air is supplied to the air motor unit 6.

  A lower pump 7 is provided below the air motor unit 6, and a rod 8 moved up and down by the air motor unit 6 extends into the lower pump 7 and is connected to a piston 9 of the lower pump 7. A paint hose 11 provided in the paint tank 10 is connected to the lower end of the lower pump 7.

  Therefore, when the rod 8 extending inside the lower pump 7 is moved up and down by the air motor unit 6, the piston 9 provided at the lower end of the rod 8 is moved up and down by the lower pump 7. By the vertical movement of the piston 9, the paint is sucked from the paint hose 11 connected to the paint tank 10. Thus, the paint pump 3 is an airless pump.

  The discharge port 12 of the lower pump 7 is provided with a regulator 13, and the paint discharged from the lower pump 7 is discharged to the regulator 13. The regulator 13 reduces the pulsation of the paint discharged by the piston 9 of the lower pump 7. The regulator 13 is provided with a discharge hose 14, and a gun portion 15 is provided at the tip of the discharge hose 14. In the drawing, a part of the long discharge hose 14 is omitted.

  The paint pump 3 is a low-pressure airless pump in which the piston area ratio of the lower pump 7 to the piston area of the air motor unit 6 is reduced (for example, the pressure ratio is 30: 1). By using the low-pressure airless pump as the paint pump 3, it is possible to prevent the paint dust (spray dust) from being scattered even when painting at a short distance from the paint injection nozzle 18, as will be described later. In addition, by providing a regulator 13 to suppress pulsation due to a pressure change of the paint discharged from the paint pump 3, the width of the stripe coat paint S by the paint discharged by the piston 9 of the lower pump 7 is made constant as described above. This prevents the paint dust from scattering and allows the stripe coat coating S to ensure an appropriate coating film quality in an application area where the stripe coat coating S is required.

  Thus, in this embodiment, the low-pressure airless coating machine 2 having the regulator 13 is used in order to enable application to an area where the stripe coat coating S is required and to reduce the scattering of paint dust.

  On the other hand, the gun portion 15 is provided with an operation lever 16 and a paint spray nozzle 18. In this example, a discharge pipe 17 having a predetermined length is provided at the tip of the operation lever 16, and a paint spray nozzle 18 is provided at the tip.

  According to the gun portion 15, the paint supplied from the lower pump 7 via the regulator 13 and the discharge hose 14 is sprayed from the paint spray nozzle 18 by grasping the operation lever 16. The fillet welded part spray guide 30 is provided in the paint spraying direction of the paint spraying nozzle 18.

  As shown in FIGS. 2 (a) to 2 (c), the fillet welded part spray guide 30 is attached to the support 19 of the paint spray nozzle 18 provided at the tip of the discharge pipe 17 (FIG. 1). It has the attachment part 31 and the guide plate 32 extended from this attachment part 31 to a front-end | tip direction. The attachment portion 31 can be screwed to the support portion 19. The detailed structure is not shown.

  The guide plate 32 has a distance from the paint spray nozzle 18 to the coated surface 61 (the “distance from the paint spray nozzle to the coated surface” in the document of this specification and claims) from the paint spray nozzle 18. (The distance to the tip of the guide plate 32) is a distance suitable for atomizing the paint P, and is formed with a length L (for example, about 80 mm) that allows the stripe coat S to be formed in a predetermined range. The distance L (for example, about 80 mm) from the paint spray nozzle 18 to the surface to be coated 61 is a distance according to the speed at which the operator manually moves the paint spray nozzle 18 at the fillet weld 60 to apply the paint. ing.

  The guide plate 32 is provided so as to spread at a predetermined angle from the attachment portion 31, and the two guide plates 32 are symmetrically located with respect to the nozzle opening portion 33 provided at the center of the attachment portion 31. Is provided. That is, the guide plate 32 is provided so as to be opposed to each other across the paint spraying direction of the paint spray nozzle 18.

  As shown in FIG. 2 (c), the spread angle of these guide plates 32 is set to an angle at which the paint P sprayed from the paint spray nozzle 18 located at the center of the nozzle opening 33 does not contact. The fillet weld corresponding spray guide 30 of this embodiment is set to an angle having a certain gap with respect to the spread of the paint P sprayed from the paint spray nozzle 18. In this example, the opening width W at the distal end portion of the guide plate 32 is set to an angle of about 50 mm.

  Further, as shown in FIG. 2 (a), each guide plate 32 has a tip end portion in a moving direction corner 34 formed in a curved surface shape. In this embodiment, the entire tip portion of each guide plate 32 is formed in a curved shape. This fillet welded type spray guide 30 is made of plastic, stainless steel, aluminum, steel or the like. Furthermore, a roller (not shown) that rolls on the surface to be coated 61 may be provided at the tip of each guide plate 32 to prevent damage to the coating film.

  Therefore, according to the stripe coat coating apparatus 1 provided with the fillet welded part corresponding spray guide 30, the two members forming the coated surface 61 of the fillet welded part 60 as shown in FIG. 2 (c). When the spray guide 30 corresponding to the fillet welded portion is moved along the direction (in this figure, the direction orthogonal to the paper surface), the distance between the paint spray nozzle 18 and the coated surface 61 is kept constant, and the stripe coat coating S is applied. It can be carried out. As a result, it is possible to perform the stripe coat coating S that ensures an appropriate coating film quality on the fillet weld 60 by the coating P sprayed from the coating spray nozzle 18 at a predetermined low pressure.

  As shown in FIG. 3, the paint spray nozzle 18 and the fillet weld corresponding spray guide 30 are provided at the tip of the discharge pipe 17 as the use state of the fillet weld corresponding spray guide 30. The variable mechanism 20 is tilted so as to face the coated surface 61 at an appropriate angle. The variable mechanism 20 is a mechanism in which a support portion 19 is provided at the distal end portion of the discharge pipe 17 and is supported by a swing shaft 21 on the support portion 19 so as to be swingable. The variable mechanism 20 can be bent in the direction in which the spread guide plate 32 of the fillet welded part type spray guide 30 is provided. The two-dot chain line shown in the figure shows a state where the discharge pipe 17 side is swung. The variable mechanism 20 can maintain the angle of the paint spray nozzle 18 and the fillet welded part spray guide 30 in a tilted state.

  Further, according to the fillet welded part spray guide 30 used in such a state, the tip of the fillet welded part spray guide 30 is formed on the two coated surfaces 61 forming the fillet welded part 60. The paint spray nozzle 18 can be moved while keeping the distance between the paint spray nozzle 18 and the surface to be coated 61 by moving the part along the traveling direction V. Even when one of the fillet welded spray guides 30 is moved along one surface of the coated surface 61, the paint spraying nozzle 18 is maintained with the distance between the coating spray nozzle 18 and the coated surface 61 substantially maintained. Can be moved.

  Therefore, it is possible to perform the stripe coat coating S in which an appropriate coating film quality is ensured in a predetermined range of the fillet weld 60 by the paint sprayed from the paint spray nozzle 18.

  In addition, the stripe coat coating S with the two guide plates 32 positioned in the direction intersecting the traveling direction V of the fillet welded spray guide 30 (the direction intersecting the direction in which the stripe coat coating S is performed). Therefore, the spraying of the paint P sprayed from the paint spray nozzle 18 to the surroundings can be reduced.

By the way, the quality of the coating film by the paint P sprayed from the paint spray nozzle 18 is determined by the discharge pressure of the paint P , the diameter of the paint spray nozzle 18, the distance to the coated surface 61, and the paint spray nozzle 18 by the operator. It depends on the moving speed. For example, regarding the relationship between the distance from the paint spray nozzle 18 to the surface to be coated 61, if it is close, the coating film thickness becomes thick, and there is a risk of causing subsequent cracks and the like. If it is far away, the thickness of the coating film becomes thin, and it is necessary to repair the part.

Therefore, as an example of the stripe coat coating S by the stripe coat coating apparatus 1,
Discharge pressure (secondary pressure): 4 MPa to 9 MPa,
Diameter of paint spray nozzle: 0.38 to 0.44 mm,
Distance (guide plate length): about 50 to 100 mm,
Movement speed of paint spray nozzle: about 0.8 to 1.2 m / sec,
Under these conditions, the stripe coat coating S can be performed while ensuring an appropriate coating film quality by performing the stripe coat coating S while keeping the distance between the paint spray nozzle 18 and the coated surface 61 constant. For example, in the case of the above-described bulk carrier having a captain of about 290 m, the strip coat coating S by brush coating required about 10,000 hours, but according to the stripe coat coating apparatus 1, it can be performed in about 5000 hours. As a result, it is possible to greatly reduce the work time and labor. Moreover, since it is the stripe coat coating S at a low pressure, the paint P can be made difficult to fly to other parts, and the paint dust can be prevented from scattering.

  Next, the edge portion-compatible spray guide 50 will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the structure of the said stripe coat coating apparatus 1, and the description is abbreviate | omitted.

  As shown in the figure, the edge portion type spray guide 50 for applying the stripe coat S to the edge portion 70 is also attached to the support portion 19 of the paint spray nozzle 18 provided at the tip portion of the discharge pipe 17 (FIG. 1). And a guide plate 52 extending from the mounting portion 51 in the distal direction. The attachment portion 51 can be screwed to the support portion 19. The detailed structure is not shown.

  The guide plate 52 has a length L (for example, about 30 mm) at which the distance from the paint spray nozzle 18 to the coated surface 71 is a distance suitable for atomizing the paint, and the stripe coat S can be applied within a predetermined range. It is formed with. The distance L from the paint spray nozzle 18 to the coating surface 71 (the distance to the tip of the guide plate 52. For example, about 30 mm) is a distance according to the speed at which the operator manually operates the edge portion 70. It has become.

  The guide plate 52 is provided so as to spread at a predetermined angle from the mounting portion 51, and the two guide plates 52 are symmetrical with respect to the nozzle opening 53 provided at the center of the mounting portion 51. Is provided. That is, the guide plate 52 is provided so as to oppose the paint spraying direction of the paint spraying nozzle 18.

  As shown in FIG. 4C, the spread angle of these guide plates 52 is set to an angle at which the paint P sprayed from the paint spray nozzle 18 located at the center of the nozzle opening 53 does not contact. The edge portion corresponding spray guide 50 of this embodiment is set to an angle having a wide gap with respect to the spread of the coating material P sprayed from the coating material spray nozzle 18. In this example, the opening width W at the distal end portion of the guide plate 52 is set to an angle that is about 30 mm.

  Further, as shown in FIG. 4A, each guide plate 52 is formed so as to spread from the mounting portion 51 toward the tip, and at the center of the tip (in this example, about 30 mm at the tip). A concave traveling direction guide portion 54 that is moved along the surface 71 to be coated of the edge portion 70 is formed. The advancing direction guide portion 54 is formed in a V shape that enters about 10 mm from the tip portion of the guide plate 52. In addition, in this embodiment, the traveling direction guide portion 54 is rounded so that the central raised portion 55 is in contact with the surface 71 to be coated. Thus, by forming the raised portion 55 in the traveling direction guide portion 54, the contact portion of the traveling direction guide portion 54 with the coated surface 71 is reduced. Further, by cutting off the end of the abutting portion 54 so that no part other than the raised portion 55 of the traveling direction guide portion 54 is in contact with the surface 71 to be coated, damage to the coating film of the surface 71 to be coated is prevented. ing.

Since the edge portion 70 is usually rounded by edge processing using a grinder or the like, the round-shaped raised portion 55 is in contact with the coating surface 71 from the point of not contacting the edge portion 70. I have to. Such an edge portion corresponding spray guide 50 is formed of plastic, stainless steel, aluminum, steel or the like. Further, a roller (not shown) that rolls on the coated surface 71 may be provided at the tip portion of each guide plate 52 to prevent damage to the coating film.

Therefore, according to the edge part corresponding spray guide 50, as shown in FIG. 4A, if the edge part corresponding spray guide 50 is moved along the coated surface 71 of the edge part 70, the paint The distance between the spray nozzle 18 and the coated surface 71 can be kept constant by the guide plate 52. As a result, it is possible to efficiently perform the stripe coat coating S in which an appropriate coating film quality is ensured with a uniform coating film thickness, and the guide plate 52 can prevent the paint P from being scattered.

  In addition, the strip coat coating S can be performed in two directions while keeping the distance from the coated surface 71 by the two guide plates 52, and the stripe coating is performed in both directions while keeping the distance from the coated surface 71 by both guide plates 52. The painting work can be performed efficiently. In addition, it is possible to perform the stripe coat coating S in which the scattering of the coating P is suppressed by the coating sprayed from the coating spray nozzle 18 at a low pressure.

  As shown in FIG. 5, the use state of the edge portion corresponding spray guide 50 is that the paint spray nozzle 18 and the edge portion corresponding spray guide 50 are provided by a variable mechanism 20 provided at the distal end portion of the discharge pipe 17. It is tilted so as to face the coated surface 71 at an appropriate angle. The variable mechanism 20 is a mechanism in which a support portion 19 is provided at the distal end portion of the discharge pipe 17 and is supported by a swing shaft 21 on the support portion 19 so as to be swingable. The variable mechanism 20 can be bent toward the traveling direction V of the edge portion corresponding spray guide 50. The two-dot chain line shown in the figure shows a state where the discharge pipe 17 side is swung. The variable mechanism 20 can maintain the angle of the paint spray nozzle 18 and the edge portion corresponding spray guide 50 in an inclined state.

  Moreover, according to the edge part corresponding | compatible spray guide 50 used in such a state, it advances along the front-end | tip part of the edge part corresponding | compatible spray guide 50 to the two to-be-coated surfaces 71 which form the edge part 70. By moving in the direction V, the paint spray nozzle 18 can be moved while maintaining the distance between the paint spray nozzle 18 and the surface 71 to be coated. Even when one of the edge portion corresponding spray guides 50 is moved along one surface of the coated surface 71, the paint spraying nozzle 18 is moved while maintaining the distance between the paint spraying nozzle 18 and the coated surface 71 substantially. Can be made.

  Accordingly, it is possible to perform the stripe coat coating S that ensures an appropriate coating film quality within a predetermined range of the edge portion 70 by the paint sprayed from the paint spray nozzle 18.

  Moreover, the guide plate 52 on the front side in the traveling direction is brought into contact with the surface 71 to be coated and the guide plate 52 on the rear side is floated, so that damage to the coating film can be prevented.

  Moreover, the stripe coat coating S is performed in a state where the two guide plates 52 are positioned in a direction intersecting the traveling direction V of the edge portion corresponding spray guide 50 (direction intersecting the direction in which the stripe coat coating S is performed). Therefore, it is possible to reduce the scattering of the spray sprayed from the paint spray nozzle 18 to the surroundings.

In the edge part-compatible spray guide 50, the discharge pressure of the paint P , the diameter of the paint spray nozzle 18, the distance to the coated surface 71, and the movement speed of the paint spray nozzle 18 by the operator are adjusted. The quality of the coating film by the paint P sprayed from the paint spray nozzle 18 is kept constant.

  As described above, according to the stripe coat coating apparatus 1, when the fillet weld portion 60 is coated with the stripe coat, the fillet weld portion compatible spray guide 30 is attached to the tip of the gun portion 15, and the fillet weld portion By spraying the paint while moving the tip of the corresponding spray guide 30 along the surface to be coated 61, the stripe coat coating S can be efficiently performed on the fillet welded portion 60.

Further, when the stripe coating S is applied to the edge portion 70, the fillet welded portion corresponding spray guide 30 is replaced with the edge portion corresponding spray guide 50, and the advancing direction guide portion 54 of the edge portion corresponding spray guide 50 is changed. By spraying the paint while moving along the coating surface 71 of the edge portion 70, the stripe coat coating S can be efficiently performed on the edge portion 70.

  Therefore, in a ship to which a new coating standard is applied, it is possible to quickly perform stripe coat coating on each welded part, built-up longge, face plate, stiffener, and the like, and it is possible to greatly reduce man-hours.

  In the above embodiment, the rectangular paint spray nozzle 18 has been described as an example. However, the paint spray nozzle 18 may have a shape other than the above embodiment, and is not limited to the above embodiment. .

  In addition, the dimensions shown in the fillet welded part spray guide 30 and the edge part compatible spray guide 50 are only examples, and each dimension may be set to a suitable value according to the use conditions and the like.

  Furthermore, in the above embodiment, the paint pump 3 having the air motor unit in the upper part and the lower pump 7 in the lower part has been described as an example. However, the structure of the paint pump 3 may be different from the above-described embodiment. Well, it is not limited to the above embodiment.

  Moreover, the said embodiment has shown an example, The various change in the range which does not impair the summary of this invention is possible, and this invention is not limited to the said embodiment.

  The stripe coat coating apparatus according to the present invention can be used for stripe coat coating at each weld, built-up longge, face plate, stiffener edge, etc., in the construction of a ship or the like to which a new coating standard is applied.

1 Stripe coating equipment
2 Low pressure type airless painting machine
3 Paint pump
4 Moisture separator
5 High pressure air supply hose
6 Air motor
7 Lower pump
8 Rod
DESCRIPTION OF SYMBOLS 9 Piston 10 Paint tank 11 Paint hose 12 Discharge port 13 Regulator 14 Discharge hose 15 Gun part 16 Operation lever 17 Discharge pipe 18 Paint injection nozzle 19 Support part 20 Variable mechanism 21 Oscillating shaft 30 Fillet weld part corresponding type spray guide 31 Installation Portion 32 Guide plate 33 Nozzle opening 50 Edge-compatible spray guide 51 Mounting portion 52 Guide plate 53 Nozzle opening 54 Abutment portion 55 Raised portion 60 Fillet weld portion 61 Coated surface 70 Edge portion 71 Coated surface
P paint
S Stripe coat painting
V direction of travel

Claims (7)

A stripe coat coating apparatus for applying a stripe coat to a surface to be coated of a fillet weld or an edge in a structure,
A paint pump for supplying the stripe coat paint at a predetermined pressure;
A gun unit for controlling the injection of paint supplied from the paint pump;
And a coating material injection nozzle for injecting paint operation of the gun unit,
The coating material injection nozzle has a spray guide extending along the extent of paint morphism injection,
The spray guide includes two guide plates, and the two guide plates are provided so as to face each other across the paint spraying direction of the paint spray nozzle, and the fillet welded portion or the edge portion A stripe coat coating apparatus configured to keep a distance between a coated surface and a nozzle tip portion constant by moving in contact with two surfaces forming the coated surface . The spray guide is configured as a fillet welded type spray guide that has two guide plates facing each other and moved in contact with two surfaces forming a coated surface in the fillet welded portion ,
It said guide plate, while being set to the spread angle of the paint sprayed from the coating material injection nozzle is not in contact with, said claim 1, the corners of the moving direction contacts the object to be coated surface is formed in a curved surface Stripe coat painting equipment. The spray guide is configured as an edge portion corresponding spray guide having two guide plates opposed to each other and moved in contact with two surfaces forming the coated surface in the edge portion ,
The guide plate is set to have a spread angle at which the paint sprayed from the paint spray nozzle does not contact, and a concave traveling direction guide portion that contacts the surface to be coated is formed at the center of the tip portion . Item 2. A stripe coat coating apparatus according to item 1.   The stripe coat coating apparatus according to claim 2, wherein the paint spray nozzle includes a variable mechanism capable of changing a paint spray angle of the paint spray nozzle. The paint pump is composed of a low-pressure airless pump,
The stripe coat coating apparatus according to any one of claims 1 to 4, wherein the airless pump includes a regulator that reduces pulsation generated from a difference between a primary pressure and a secondary pressure. A stripe coat coating method for applying a stripe coat to a surface to be coated of a fillet weld or an edge in a structure,
Supply the stripe coat paint at a predetermined pressure,
The paint spraying direction of the paint spraying nozzle for spraying the paint is opposed to the surface to be coated,
The two coating plates opposed to the spray guide provided at the tip of the coating material spray nozzle are moved in contact with the two surfaces forming the fillet welded portion or the coated surface of the edge portion , whereby the coating material spraying is performed. while maintaining the distance between the nozzle tip and the front Symbol the coated surface of the nozzle constant, the stripe coat coating method characterized by coating along the paint sprayed from the coating material injection nozzle to spread the spray guide. The stripe coat coating method according to claim 6 , wherein the coating is performed by changing a coating spray angle with respect to a coating surface of the coating spray nozzle.

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