JP2011036747A - Coating device and coating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller-type self-traveling coating device which requires no large-scale equipment; and to provide a coating method. <P>SOLUTION: The roller-type self-traveling coating device includes: a coating roller; a supporting part which rotatively supports the coating roller; a wiper arm part which is connected to the supporting part to move the coating roller upward and downward; a paint-feeding part which feeds a paint to the coating roller; and a traveling body. In addition, the wiper arm part has an adjusting mechanism which adjusts the pressing pressure of the coating roller to a surface to be coated, and is installed on the side face part of the traveling body. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a self-propelled coating apparatus and a coating method.

  It is widely practiced to apply a liquid paint to a general house, a building, a fence, an inner and outer wall surface of a ship using a hand roller coating tool. Roller coating is a method in which liquid paint is immersed in the porous portion of a rotatable roller, and the paint is transferred to the coated surface while rotating it on the surface of the coated object. Compared to the above, since the paint is less scattered, the working environment is good and the coating efficiency is excellent.

  In the above-mentioned conventional roller coating, if the coating area is increased, the number of times that the roller is infiltrated into the porous portion of the roller increases, which increases labor and reduces the painting efficiency. It is unavoidable to have a defect such as contamination of the surroundings. Therefore, various pressure roller coating apparatuses that perform coating by pressure feeding a paint to a pressure roller coating machine have been proposed (see Patent Document 1, Patent Document 2, and Patent Document 3). An automatic pressure roller coating apparatus using a coating roller has also been proposed (see Patent Document 4, Patent Document 5, and Patent Document 6).

JP 2002-119909 A JP 2004-358460 A JP-A-9-192484 JP 2004-66215 A JP 2003-144997 A JP-A-61-1111165

  However, the automatic pressure roller coating apparatus of Patent Document 4 and Patent Document 5 is large in size as a whole, and the self-propelled coating apparatus of Patent Document 6 has the coating roller at the center of the main body. There was a risk that the device would be in contact with the film, leaving marks, and the running direction could be restricted.

  An object of the present invention is to provide a self-propelled roller coating apparatus and a coating method that do not require large-scale equipment.

  The present invention provides a coating roller, a support portion that rotatably supports the coating roller, a wiper arm portion that is connected to the support portion to move the coating roller up and down, and supplies the coating roller to the coating roller. A self-propelled coating apparatus including a paint supply unit and a traveling body, wherein the wiper arm unit includes an adjustment mechanism that adjusts a pressure applied to a surface to be painted by a painting roller, and a side surface of the traveling body. The present invention relates to a coating apparatus characterized by being installed in a section, and a coating method characterized by painting a paint using this coating apparatus.

  According to the coating apparatus of the present invention, a large and simple facility is not required, and a small and simple arm is fixed to the self-running portion, and the arm is provided with an adjusting mechanism for adjusting the pressing pressure. Can be pressed against the object to be coated with a constant pressure, and since the coating roller is outside the traveling body, it is easy to detach. Furthermore, according to the coating roller used in the coating apparatus of the present invention, there is almost no trace even on the uncured coating film during coating, and the coating film thickness can be easily controlled by preventing the roller from sliding in the axial direction. Is possible. Therefore, by using the coating apparatus of the present invention, it is possible to easily and safely coat a wall surface of a building such as a building or a tank without requiring a large facility such as a scaffold.

It is a conceptual diagram which shows one embodiment of the coating device which concerns on this invention. It is a conceptual diagram which shows another one embodiment of the coating device which concerns on this invention. It is the schematic which shows one embodiment of the roller for a coating used with the coating device which concerns on this invention. FIG. 4 is an exploded view of the painting roller of FIG. 3. It is the schematic which shows an example of operation | movement of the wiper arm part of the coating device which concerns on this invention. It is the schematic which shows one embodiment of the coating material supply part which the coating device which concerns on this invention uses. It is a side view which shows the coating state using the coating roller of FIG.

  A coating apparatus according to the present invention will be described below with reference to FIGS.

  FIG. 1 is a conceptual diagram showing one embodiment of a coating apparatus according to the present invention, and FIG. 2 is a conceptual diagram showing another embodiment of the coating apparatus according to the present invention. The coating apparatus according to the present invention includes a coating roller 21, a support portion 22 that rotatably supports the coating roller 21, and a wiper arm portion 23 that is connected to the support portion 22 to move the coating roller 21 up and down. The paint supply section 24 for supplying the paint to the painting roller 21 and the traveling body 25 are provided. The supply of the paint from the paint supply unit 24 to the coating roller 21 is performed through the paint hose 26 by the action of compressed air (Air).

  As shown in FIGS. 3 and 4, the painting roller 21 is composed of a roller core member and a cylindrical porous member. The roller core member has a hollow structure in the core body 5 and serves as a paint supply path. A fixed shaft 1 having a paint discharge hole 6 provided in the direction of the surface to be coated is communicated, and a rotating body 3 is provided at both ends of the fixed shaft. A plurality of pins 4 are provided on the circumferential surface of the rotating body 3 at intervals in the circumferential direction. The rotating body 3 is interlocked with the cylindrical porous member 2 with the fixed shaft 1 as a center of rotation. Rotates without load.

  In the cylindrical porous member 2, wool, chemical fiber, sponge, or the like is bonded or planted on a cylindrical drum formed of a rigid resin having rigidity, metal, or the like, and a large number of holes penetrate the peripheral wall of the cylindrical drum. It has a structure in which the paint oozes out from the inside to the outside.

The paint is discharged from the fixed shaft 1 in a certain direction (the direction of the object to be coated). Several to dozens of small holes are arranged on the fixed shaft 1 as the paint discharge holes 6, and the paint can be uniformly discharged from the discharge holes by changing the diameter of each hole. The diameter of the discharge holes and the arrangement of the discharge holes should be designed so that the paint is uniformly discharged from each hole according to Hagen-Poiseuille's law, etc., taking into account the paint viscosity, the required discharge amount and the required film thickness. be able to.
As a result, the paint can be uniformly leached from the inside of the roller core to the surface of the cylindrical porous member 2, and the excessive inclusion of the paint can be prevented.

  The rotating body 3 is installed at both ends of the fixed shaft 1 and sandwiches the cylindrical porous member 2. The cylindrical porous member 2 is sandwiched between the cylindrical porous member fixing portion 7 and the liquid leakage prevention ring 8 of the rotating body 3. And can be integrated.

  The diameter of the rotating body 3 is preferably designed to be smaller than the side circular diameter of the cylindrical porous member from the viewpoint of preventing sagging of the paint and forming a coating film.

  The plurality of pins 4 provided on the peripheral surface of the rotating body 3 are provided in order to make the contact area with the coating film surface smaller so that there is almost no trace on the uncured coating film. It is desirable that the tip has a sharper shape with a metal wire such as stainless steel or a spike such as a nail. The pin diameter and the distance between the pins are not particularly limited. From the viewpoint of the leveling property of the paint, the pin diameter may be 0.5 to 2.0 mm, particularly 0.5 to 0.7 mm. Desirably, the distance between the pins is 1.0 to 5.0 mm, particularly 2.0 to 4.0 mm, from the viewpoint of the roller diameter, the pressing pressure to the coated surface of the roller, the roller rolling property and the paint leveling property. It is desirable to be provided on the peripheral surface of the rotating body.

  As shown in FIGS. 1 and 2, the support portion 22 rotatably supports the painting roller 21 and is connected to the wiper arm portion 23 so that the painting roller 21 can be moved up and down.

  As shown in FIGS. 1 and 2, the wiper arm portion 23 is connected to the support portion 22 so that the painting roller 21 can be moved up and down, and the pressure of the painting roller 21 against the surface to be painted is reduced. An adjusting mechanism for adjusting is provided, and is installed on a side surface portion of the traveling main body 25. 1 and 2, the double-acting cylinder 232 is moved up and down by the action of compressed air (Air) for ascending operation and descending operation.

  As shown in FIG. 5, the wiper arm portion 23 has a structure in which the arm 231 moves up and down with a double-acting cylinder 232, and the arm 231 and the double-acting cylinder 232 are connected to each other through an arm connecting portion 233. . The arm 231 takes into account the moving speed and the force to push the coating roller, and selects the strength so that twist and distortion are reduced. The pressure applied to the surface to be coated of the painting roller 21 is adjusted by adjusting the pressure of the double-acting cylinder 232, and the cylinder 232 may be either an air cylinder or a hydraulic cylinder. By using a cylinder, it is possible to remotely adjust the contact pressure / non-contact between the roller for coating / the object to be coated and the pressing pressure.

  Further, by installing the wiper arm portion 23 on the side surface portion of the traveling main body 25, for example, “main body movement and painting” → “arm portion ascending and lateral movement in the reverse direction of the arm portion by the roller width” → “main body reverse direction movement and painting” "→" Raise the arm part and move laterally in the opposite direction of the arm part by the width of the roller "→" Main body movement and painting ", etc., can be repeated without touching the uncured coating film. The coating roller can be easily removed and cleaned, and maintenance is easy.

  As shown in FIG. 6, the coating material supply unit 24 has a coating tube 242 made of a soft material detachably stored in a pressurized tank 241. 244 is discharged. Even if the outlet of the paint tube 242 is self-closed, a pipe 245 with holes having several to several tens of holes on the side surface is inserted into the paint tube 242 so that the paint 244 can be discharged, and the tube outlet is installed. . The entire paint tube 242 is disposed in the pressurized tank 241, and only the piping disposed at the tube outlet is taken out from the pressurized tank 241, and liquid feeding is possible by pressurizing with compressed air. By adopting such a configuration, it can be mounted on the traveling body 25 that is self-propelled, and liquid feeding in all positions (360 ° rotation) is possible without air bubbles being mixed into the paint during liquid feeding. .

  In the method of the present invention, the paint is applied using the coating apparatus having the above-described configuration. As shown in FIG. 7, the coating roller 21 installed on the surface to be coated 10 is brought into contact with the pin 4, whereby the distance between the surface of the cylindrical porous member 2 and the surface to be coated 10 is kept constant. . At the time of painting, the rotating body 3 is rolled in the painting direction, and the cylindrical porous member 2 is rotated. The coating material is supplied from the coating material supply unit to the fixed shaft 1 serving as a supply path, and leached from the surface of the cylindrical porous member 2. The paint is applied to the coated surface 10.

  As the paint, a liquid paint known per se is used and can be arbitrarily selected depending on the purpose. Specific examples include water-based and organic solvent-based paints. The paint can form a colorless transparent, colored transparent and colored opaque coating.

Hereinafter, reference numerals in FIG. 1 to FIG. 7 will be described.
DESCRIPTION OF SYMBOLS 1 Fixed axis | shaft 2 Cylindrical porous member 3 Rotating body 4 Pin 5 Roller core part main body 6 Paint discharge hole 7 Cylindrical porous member fixing | fixed part 8 Liquid leakage prevention ring 10 Coating surface 11 Coating paint 21 Coating roller 22 Support Part 23 wiper arm part 24 paint supply part 25 travel body 26 paint hose 231 arm 232 double acting cylinder 233 arm connection part 241 pressure tank 242 paint tube 245 piping with hole

Claims (4)

A coating roller, a support unit that rotatably supports the coating roller, a wiper arm unit that is connected to the support unit to move the coating roller up and down, and a paint supply unit that supplies paint to the coating roller A self-propelled painting device comprising a traveling body,
The said wiper arm part is equipped with the adjustment mechanism which adjusts the pressing pressure to the to-be-painted surface of the roller for coating, and is installed in the side part of a traveling body, The coating device characterized by the above-mentioned. The coating roller is composed of a roller core member and a cylindrical porous member, and the coating roller is a coating roller in which paint leaches from the inside of the roller core to the surface of the cylindrical porous member,
The roller core member has a hollow structure and serves as a paint supply path, and includes a fixed shaft in which a plurality of paint discharge holes are provided in the direction of an object to be coated, and rotating bodies provided at both ends thereof.
2. The rotating body according to claim 1, wherein a plurality of pins are provided on the circumferential surface at intervals in the circumferential direction, and rotate in conjunction with the cylindrical porous member with the fixed shaft as a center of rotation. Painting equipment. The coating apparatus according to claim 1, wherein the paint supply unit has a configuration in which a paint tube is detachably accommodated in a pressurized tank, and the paint tube is contracted by the action of compressed air to discharge the paint. The coating method characterized by coating a coating material using the coating apparatus of any one of Claim 1 thru | or 3.

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