JP2004066215A - Coating roller, roller type coating machine, roller type coating machine usable for curved surface, and automatic coating machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller type coating machine which can reduce a waste of paint and evenly distribute the paint to a roller brush. <P>SOLUTION: The roller type coating machine is provided with a solid cylindrical body 11 with a shaft center hole 13 and radial holes 14 extending radially from multiple points of the shaft center hole 13, the brush 12 of the roller installed to the periphery of the solid cylindrical body 11, a paint conveying tube 24 connected to both ends of the shaft center hole 13 of the solid cylindrical body 11, and an arm 31 for supporting rotatably both ends of the solid cylindrical body 11. The whole of these components is supported by a rotatable supporting mechanism 40 and a vertically movable supporting mechanism 50. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller-type coating apparatus capable of improving a coating roller and coating a curved surface, and an automatic coating apparatus for the roller-type coating apparatus. The present invention relates to an apparatus and an automatic coating apparatus.
[0002]
[Prior art]
Roller type coating apparatuses have been used in various fields so far. For example, when a completed automobile is shipped at an automobile manufacturing plant, a coating film of the automobile is subjected to rainwater, iron powder, pollen, and so on. It is also used to form a protective film on the surface of a coating film for the purpose of protecting it from contamination such as bird droppings and preventing deterioration in quality.
[0003]
Conventionally, a roller type coating apparatus has been known in which a roller is manually rotated in a paint reservoir in which a paint is stored, and the paint penetrates the roller. However, it is difficult to uniformly apply the paint to the entire roller. Occurred. In addition, since the operation of infiltrating the paint again into the roller after application several times is repeatedly performed, it takes many man-hours, and has many drawbacks such as labor costs, work time, and extension of the painting booth.
Eventually, a device was developed that automatically supplied the paint in the paint reservoir to the rollers by pumping. Further, an automatic supply device capable of coping with the application of a paint having a higher viscosity has been developed, and the automatic supply device has been developed in a smaller size.
As the latest roller-type coating apparatus of this type, there is a roller-type coating apparatus (Japanese Patent Application Laid-Open No. Hei 9-192584) according to the invention filed by the present applicant.
13 and 14 are views for explaining the roller type coating apparatus. FIG. 13 is a perspective view of the roller type coating apparatus, and FIG. 14 is an exploded perspective view of the roller type coating apparatus of FIG.
In FIGS. 13 and 14, reference numeral 80 denotes a roller type coating apparatus, which is roughly divided into a roller brush 82, a roller support 85, and a handle 88.
The roller brush 82 rolls on the coating surface of the automobile, which is the coating surface, to apply the coating on the coating film surface. The roller brush 82 is a roller support 85 that rotatably supports the roller brush 82. The handle 88 supplies the paint to the roller brushes 82 while supporting it.
[0004]
The handle 88 includes a grip portion 88a for an operator to grip and an operation lever 88b. A crank-shaped frame body 86 is connected to a tip of the grip portion 88a.
The frame body 86 is a paint conduit made of a rigid metal, for example, stainless steel. A paint supply pipe is connected to the rear end of the grip 88a of the handle 88, and the paint supply pipe is flexible so that the worker holding the grip 88a can continue the coating operation while moving. The operation lever 88b has a function of flowing and blocking the paint, which is fed from the paint supply pipe, to the frame body 86 side.
[0005]
A diffuser 83 is rotatably attached to the roller support 85.
As shown in FIG. 14, the diffuser 83 has a plurality of single diffusers 831 to 836, and each of the single diffusers 831 to 836 is a polygon and has a substantially star-shaped hollow portion extending radially from a central portion in the direction of each apex. And a columnar shape having a substantially star-shaped cross-section having a concave portion at the center of each periphery between the tops (a so-called lotus root shape having irregularities on the surface). A plurality of paint storage chambers are formed by connecting a plurality of hollow portions so that the top ends thereof communicate with the concave portions of the adjacent diffusers 831 to 836, and the periphery of each diffuser 831 to 836 and the inner peripheral surface of the roller 82. . The roller brush 82 covers the diffuser 83.
The roller brush 82 is composed of a cylindrical roller 82a whose both ends in the axial direction are open and a cylindrical brush body 82b mounted on the outer periphery of the roller. There are a plurality of vents that communicate between the inside and the outside.
[0006]
The use of the roller type coating apparatus 80 formed as described above is as follows. First, by holding the grip portion 88a of the handle 88 and bringing the roller brush 82 into contact with the coating surface and operating the operation lever 88b, the paint to be fed is gripped. The portion 88a is pressure-fed into the paint reservoir in the diffuser 83 through the frame main body 86, the roller support 85, and the paint supply hole of the roller shaft 81, and is adjacent to the top end of the hollow portion of each diffuser unit 831 to 836. The diffusers are distributed and introduced into the respective paint storage chambers formed by the respective peripheral portions of the respective diffusers 831 to 836 and the inner peripheral surface of the roller 82 from the openings formed by the concave portions of the respective diffusers 831 to 836. The paint dispersed and introduced into each paint storage chamber is ejected to the outer periphery of the roller 82a through the ejection hole, and penetrates into the brush body 82b. In a state where the paint has sufficiently penetrated into the brush body 82b of the roller brush 82, an operator presses the roller brush 82 onto the coating film surface and rolls the roller brush 82 along the coating film surface to thereby penetrate the brush body 82b. The paint that you are applying is applied.
[0007]
[Problems to be solved by the invention]
According to the roller type coating device 80 described above, even when a high-viscosity coating material is applied, regardless of the simple configuration, the roller brush 82 rolls smoothly without slipping on the application surface, and the roller brush 82 The coating of a uniform thickness can be applied without stopping the rotation, and the coating material does not flow out from between the mounting portion and the sliding portion. There were effects such as avoiding a decrease in the yield of paint without inviting contamination of the vehicle body and deterioration of the working environment.
[0008]
However, the applicant has noticed the following disadvantages.
(1) In the diffuser 83, it is necessary to always impregnate the star-shaped hollow portion and the paint storage chamber with sufficient paint in order to apply the paint on the paint film to a uniform thickness. Even later, a considerable amount of paint remains in the diffuser 83, which not only wastes paint but also causes the paint to flow out and contaminate the surroundings. It took a lot.
(2) Further, in this roller type coating apparatus, the roller shaft 81 is inserted into the axis of the drum, so that the number of parts is increased and it takes time to clean the roller shaft 81.
(3) Further, in this roller type coating apparatus, since the coating material is supplied only from one end, the coating material with sufficient pressure does not spread to the tip end portion, and it is difficult to apply the coating material uniformly to the entire roller. there were.
(4) Since the roller type coating apparatus is a cantilever supporting the roller at only one end, skill is required to uniformly apply a force to the entire roller, and it is easy for an amateur to use. Was not good.
In addition, when the coating is performed using this coating apparatus, the difference between the coating film thicknesses on the left and right sides of the roller portion becomes large, so that a sufficient film thickness cannot be secured. For this reason, it is necessary to repeatedly coat the coating surface where the film thickness is not sufficiently ensured, and it has been difficult to perform uniform coating by the repeated coating.
[0009]
On the other hand, a roller type coating apparatus itself which feeds and supplies a paint from both ends of a roller and supports the roller at both ends is already known in Japanese Patent Application Laid-Open No. 57-75170.
FIG. 15 is a plan view showing the roller type coating apparatus (note that the rollers are imaginary lines). In the figure, 101 is a paint supply pipe, 102 is a roller body, 103 is a roller core, 104 is a paint discharge port, 105 is a hollow L-shaped joint, 106 is a relay pipe, 107 is a ball, 108 is a handle and paint supply pipe, 109 is It is a partition plate.
The paint arriving through the handle / paint supply pipe 108 is separated into left and right relay pipes 106, enters the paint supply pipe 101 via the hollow L-shaped joint 105, respectively, passes through the paint discharge port 104 through the roller core 103, It goes to the main body 102 and is applied uniformly.
This roller type applicator is particularly effective when the roller body 102 is set up vertically and rolled in parallel with the floor to apply a vertical wall or the like, and in this case, the ball 107 is attached to the lower relay pipe 106. Since the entrance is closed, it enters the paint supply pipe 101 only from the upper relay pipe 106, reaches the partition plate 109, and exits from the partition plate 109 through the upper paint discharge port 104 to the roller. On the other hand, the paint is not supplied from the lower relay pipe 106, but the paint flows under the roller body 102 by gravity, so that even if the roller body 102 is set up vertically and applied, the paint can be uniformly applied vertically. It is.
However, this roller type coating apparatus also has the following disadvantages.
(1) Since there is no detailed description of the roller core 103, it is considered that the roller core 103 has a structure like a large number of conventionally known flow paths or a sponge body. This is the same as the above-mentioned disadvantage (1) of the roller-type coating apparatus described in Japanese Patent Application Laid-Open No. 9-192584 because of the staying state.
(2) In this roller type coating apparatus, the paint supply pipe 101 is inserted into the axis of the drum, and this point is the same as the disadvantage (2) of the roller type coating apparatus described in JP-A-9-192584. It is.
(3) Although this roller type coating apparatus has a partition plate 109 at the center, and paints and supplies the paint from both ends of the roller, there is a difference in the pressure between the left and right paints around the partition plate 109. Even if there is, the pressure difference is divided by the partition plate 109 and is not balanced, so that the thickness of the paint applied from the left and right around the partition plate 109 will be different. Further, since the partition is separated by the partition plate 109, the same phenomenon that the paint is supplied only from one end occurs, and the paint of sufficient pressure does not spread to the partition plate side at the back of the paint supply pipe 101, It is difficult to apply paint uniformly.
As described above, the above-mentioned drawback has not been solved by the roller type coating apparatus described in JP-A-57-75170 in which the paint is simply fed from both ends of the roller and the roller is supported at both ends.
[0010]
Conventionally known roller-type coating apparatuses including this roller-type coating apparatus have not been automated. Even flat surface applications have been applied by hand using rollers and have not been automated. Further, when the coating surface is used for an object having a curved surface, it has been considered that automation is more difficult because it is particularly difficult to uniformly contact the roller brush with the coating surface.
[0011]
And the automatic application of the paint has been adopted exclusively by spray (spray) painting.
However, according to the spray method, paint scattered from the nozzle becomes dust on the outer periphery of the pattern, it can not be applied evenly, and the work of peeling off this dust part is done by hand, which is quite troublesome work I was As described above, the spray type automatic coating apparatus was sometimes used, but was incomplete.
[0012]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a coating roller capable of reducing paint waste and uniformly distributing paint to a roller brush. Provides a roller-type coating device for curved surfaces that can evenly apply coating on curved surfaces, and ultimately a roller that can automatically apply even curved application surfaces using this roller-type coating device for curved surfaces. It is an object of the present invention to provide a type automatic coating apparatus.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention of the application roller according to claim 1 is characterized in that a shaft center hole penetrating the shaft center and a radial hole radially extending radially from a plurality of locations of the shaft center hole are left. And a roller brush attached to the outer periphery of the solid cylindrical body.
According to the present invention, the volume occupied by the paint in the solid cylindrical body is small, and the roller shaft unlike the conventional device is not required. Maintenance is easy and the number of parts can be reduced.
[0014]
According to the invention of the coating roller according to the second aspect, a solid cylinder is formed by leaving a shaft center hole penetrating the shaft center and a radial hole radially extending from a plurality of locations of the shaft center hole. A plurality of divided roller brush assemblies each including a body and a roller brush attached to the outer periphery of the solid cylindrical body; an elastic body for attracting the divided roller brush assemblies; and all the divided roller brush assemblies And a flexible tube penetrating through the axial center hole of the flexible tube, wherein the hole formed in the flexible tube and the radiation hole coincide with each other.
According to the present invention, as in the first aspect of the invention, the volume occupied by the paint in the solid cylinder is small, and the roller shaft unlike the conventional device is not required. Less waste of paint, less waste, easier maintenance, fewer parts, of course, it can also follow curved surfaces with local irregularities, so it can also be applied to curved surfaces with irregularities It can be applied neatly.
[0015]
According to a third aspect of the present invention, in the application roller according to the first or second aspect, the surface of the solid cylinder has a circumferential groove connected to an outlet of the radiation hole.
According to the present invention, the paint coming out of the radiation hole quickly spreads in the circumferential direction through the circumferential groove, and as a result, the paint spreads uniformly over the entire surface of the roller, thereby contributing to uniform application.
[0016]
According to a fourth aspect of the present invention, there is provided a roller type coating apparatus, wherein the coating roller according to any one of the first to third aspects is connected to both ends of the shaft center hole of the solid cylindrical body of the coating roller. It is characterized by comprising a paint feeding pipe, and an arm for rotatably supporting the coating roller at both ends of the coating roller.
According to the present invention, since the paint is supplied from both ends of the coating roller and supported at both ends, the hydraulic pressure is uniform over the entire shaft center hole passing through the shaft center, and the pressing force applied to the coating roller is reduced. As a result, the paint can be evenly distributed over the entire roller.
[0017]
The invention of a roller application device according to a curved surface according to claim 5, wherein the coating roller, a coating material feeding tube for feeding the coating material from both ends of the coating roller to the inside, and the coating roller rotatably rotate the coating roller. An arm part supported at both ends of the arm, a pivotable support mechanism that pivotally supports the arm part on a plane parallel to a vertical plane including the axis of the coating roller, and a movable part that vertically supports the arm part And a vertically movable supporting mechanism.
According to the present invention, since the roller brush is displaced following the application surface by the pivotable support mechanism, the coating can be performed without unevenness, and the roller brush can be brought into contact with the application surface with a constant pressure by the vertically movable support mechanism. As a result, a coating having a uniform thickness can be performed.
[0018]
According to a sixth aspect of the present invention, there is provided a roller-type coating apparatus for a curved surface, wherein the coating roller according to any one of the first to third aspects is used as the coating roller according to the fifth aspect.
According to the curved surface-applicable roller type coating apparatus of the fifth aspect, the arm portion can be turned on a vertical plane including the axis of the roller and can also be moved in the vertical direction. Although not restricted, according to the present invention, if the application roller according to any one of claims 1 to 3 is used, the remaining amount of the paint is reduced, the waste of the paint is reduced, and the care is simple. Thus, the paint spreads uniformly over the entire surface of the roller, so that the uniformity is further improved and the usability is improved.
[0019]
According to a seventh aspect of the present invention, there is provided a roller type automatic coating apparatus, wherein the three-dimensional movable robot is provided with the curved surface compatible roller coating apparatus according to the fifth or sixth aspect attached to the end of an arm of the robot. A robot controller for controlling a mobile robot, and a pump controller for controlling a flow rate of a paint to be fed to the roller applying device corresponding to the curved surface are provided.
According to the present invention, the robot operation (the number of rotations of the roller brush, the pressing pressure), the supply amount of the paint, the supply pressure and the like are automatically determined in consideration of the viscosity, the film thickness, the coating environment (temperature, humidity, etc.) of the paint. The roller coating can be appropriately set, and more uniform roller coating can be performed by automation.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
(First Embodiment of the Invention)
FIG. 1 is a perspective view conceptually showing a coating apparatus including a coating roller according to a first embodiment of the present invention. In FIG. 1, the application roller according to the first embodiment of the present invention is a part of a roller brush assembly 10.
Therefore, the coating roller according to the first embodiment of the present invention will be described first.
FIG. 2 is a longitudinal sectional view of the roller brush assembly in the axial direction, and FIG. 3 is a view taken in the direction of arrows AA in FIG.
As shown in FIGS. 2 and 3, the roller brush assembly 10 includes a solid cylinder 11 and a roller brush 12 fitted on the outer periphery of the solid cylinder 11.
The solid cylindrical body 11 is formed of a solid material such as a synthetic resin or a metal, and has only a shaft center hole 13 penetrating the shaft center thereof and a radially extending radially extending from a plurality of locations of the shaft center hole 13. It has a solid structure in which a paint supply passage is formed only by the holes 14.
[0021]
As shown in FIG. 3, the radiation holes 14 extend in the radial direction one by one at 90 ° intervals around the axial center hole 13 and are composed of a total of four radiation holes. Although the number of the radiation holes 14 is four here, it is not limited to four. However, one of the features of the present invention is that the number of the radiation holes 14 is not increased. If the number is increased, a large amount of paint will accumulate in a large number of radiation holes, and it will not be different from a conventional roller in which a large amount of paint accumulates in terms of operation and effect.
Specifically, as shown in (a) to (f) of FIG. If the number is further increased, the same effect as the conventional roller as shown in FIG.
[0022]
The diameter of the holes is determined by the viscosity of the paint used.
Further, in the first embodiment, a groove 15 (see FIG. 5) is formed at each outlet of the radiation hole 14 so as to make a round in the circumferential direction from the outlet. By doing so, the paint coming out of the radiation hole easily spreads in the circumferential direction through the circumferential groove, and the paint spreads quickly and uniformly over the entire surface of the roller, thereby contributing to uniform application.
The solid cylindrical body 11 has a flange 16 formed at one end and a female screw 17 formed at the center of the other end surface.
The roller brush 12 has a synthetic resin fiber adhered or planted on a drum 18 formed of a rigid synthetic resin, metal, or the like. The drum 18 has a plurality of holes 19 formed in the peripheral wall thereof so as to match the grooves 15.
[0023]
The roller brush assembly 10 has the gasket 20 attached to the flange 16 of the solid cylinder 11, the roller brush 12 is fitted from the other end of the solid cylinder 11, and then the solid cylinder 11 The disk 22 is engaged with the other end of the body 11 via the gasket 21, and the bolt 23 is screwed into the female screw 17 of the solid cylindrical body 11 to be integrated.
[0024]
FIG. 5 is an exploded perspective view of the roller brush assembly 10 shown in FIG. 1. The roller brush assembly 10 includes a solid cylindrical body 11 and a roller brush 12, and a disc 22 is engaged with an end of the roller brush 12. Then, the bolts 23 are integrated by screwing them into the solid cylindrical body 11 (these are assembled later). A radial hole 14 extending radially from the axial center hole 13 penetrating the axial center can be seen. At each outlet of the radiating hole 14, it can be seen that the groove 15 makes a round from the outlet in the circumferential direction.
[0025]
(Second embodiment of the invention)
Next, a second embodiment of the present invention will be described.
The second embodiment relates to a method of supplying paint to the axial center hole 13 of the solid cylinder 11 of the application roller and a method of supporting the solid cylinder 11.
Conventionally, as described with reference to FIG. 13, since one-sided supply and cantilever support were used, the above-described drawbacks existed. However, here, the paint feed pipes 24 ( (See FIG. 1), and both ends of the coating roller are rotatably supported by arms 31. The arms 31 are connected by a lower frame 32 to form a support 30.
[0026]
As described above, the paint pressurizing pipe 24 is connected to both ends of the solid cylindrical body 11, and the end of the paint pressurizing pipe 24 is connected to the pump (see 73 in FIG. 11). In the roller brush assembly 10 configured as described above, the paint is supplied from both ends of the shaft center hole, and the paint supplied to the shaft center hole 13 is sent to the annular groove 15 through each radiation hole 14, It is distributed to the roller brush 12 through the groove.
Further, the structure for rotatably supporting the roll brush assembly 10 on the arms 31, 31 and connecting the paint pumping tube 24 to the shaft center hole 13 of the solid cylindrical body 11 may be a known appropriate structure. Good.
As described above, according to this embodiment, since the paint is supplied from both ends of the coating roller and supported at both ends, the hydraulic pressure becomes uniform over the entire shaft center hole passing through the shaft center, and the coating roller Is uniform, so that the paint can be evenly distributed over the entire roller.
[0027]
(Third Embodiment of the Invention)
Next, a third embodiment of the present invention will be described.
The applicator according to the third embodiment includes, in FIG. 1, a pivotable support mechanism 40 that pivots a support 30 that supports the roller brush assembly 10 in an arrow direction A of FIG. It comprises a possible support mechanism 50.
[0028]
The support 30 comprises two arms 31, 31 and a lower frame 32 spanned between the arms, and the two arms 31, 31 rotatably support the roller brush assembly 10 therebetween. are doing. The support 30 is attached to a pivotable support mechanism 40, and the pivotable support mechanism 40 is attached to a vertically movable support mechanism 50.
The pivotable support mechanism 40 has a plate 41 extending on the upper surface of the lower frame 32 in parallel with the axis of the roller brush assembly 10, and this plate is rotatably connected to the intermediate frame 33 by a pin 42.
[0029]
6A and 6B are schematic diagrams illustrating the operation of the pivotable support mechanism 40. FIG. 6A illustrates a state in which the rollers roll on a flat surface, FIG. 6B illustrates a state in which the rollers roll on a curved surface that rises to the right in the figure, and FIG. ) Shows the state of rolling on a curved surface rising left in the figure.
In FIG. 6A, since the roller brush assembly 10 rolls on a flat surface, the intermediate frame 33 is horizontal with the pin 42 as the center.
In (b), when the roller brush assembly 10 approaches a curved surface that rises to the right, the intermediate frame 33 rotates about the pin 42, so that the intermediate frame 33 remains horizontal and the lower roller brush assembly 10 It can roll along a rising curved surface.
In (c), when the roller brush assembly 10 approaches a curved surface rising leftward, the intermediate frame 33 rotates around the pin 42 in the opposite direction to that in (b), so that the intermediate frame 33 is also kept horizontal. The lower roller brush assembly 10 can roll along a curved surface that rises to the left.
Further, since the paint feeding tube 24 is partially formed of a flexible material and has a sufficient length, the roller brush assembly 10 can follow the turning even if it turns.
[0030]
According to the third embodiment, the support 30 further includes a vertically movable support mechanism 50. FIG. 7 shows this vertically movable support mechanism 50.
In FIG. 7, a vertically movable supporting mechanism 50 supports two arms 51, 51 integrally supporting an upper frame 34 at a free end on a base 33a of the intermediate frame 33 by pins 52 so as to be swingable. The arms 51 are urged upward by a spring (here, a torsion coil spring) 53.
The vertically movable support mechanism 50 includes an adjusting screw 54 for adjusting the urging force of the spring 53, and the screw is brought into contact with one end of the spring 53.
Further, in the vertically movable support mechanism 50, the maximum opening angle of the arm 51 is set to about 20 to 60 degrees by an angle regulating unit (not shown). Experiments have also revealed that the range of about 20 to 60 degrees is a numerical value that can be easily set for the support 30 to move up and down.
Similarly, experiments have shown that the arms 31 that rotatably support both ends of the coating roller 10 should also be set at about 20 to 60 degrees with respect to the horizontal plane.
The weight of the roller is preferably in the range of 0.6 to 1.5 kgf (5.7 to 14.7 N). If the pressing force is weaker than this range, the rolling property of the roller is reduced, and the inclination of the shape corresponding to the curved surface is reduced. Conversely, if the pressing force is higher than this range, the coating surface (in the case of automobile coating, the body) is deformed, the rolling property of the roller is reduced, and the coating surface on the roller end side becomes thick.
The weight of the roller can be increased by adjusting the adjusting screw 54 and increasing the opening angle, while it can be reduced by decreasing the opening angle.
[0031]
The above-described vertically movable support mechanism 50 can adopt not only the embodiment described above but also, for example, a pantograph mechanism or the like.
[0032]
FIGS. 8A and 8B are schematic diagrams for explaining the operation of the vertically movable support mechanism 50. In the case of rolling the coated surface having irregularities, FIG. 8A shows a state in which the lower surface is rolled, and FIG. Each state is shown.
In FIG. 8A, since the roller brush assembly 10 rolls on a low surface, the vertically movable support mechanism 50 has a large open angle of the arms 51, 51, and the roller brush assembly 10 reaches downward. be able to. On the other hand, in (b), since the roller brush assembly 10 rolls on a high surface, the up-and-down movable support mechanism 50 has a state in which the opening angle of the arms 51, 51 is narrow, and therefore, the roller brush assembly 10 is on a high surface. You can retreat.
[0033]
As described above, according to the third embodiment, there is provided the swingable support mechanism 40 for swinging the support 30 in the arrow direction A of FIG. Therefore, the roller brush assembly 10 can always be pressed from directly above even on a curved surface that is vertically and horizontally inclined, and uniform application is possible.
[0034]
FIG. 9 shows a modified example of the roller brush assembly shown in FIG. (A) is a cross-sectional view when a flat surface is coated, and (b) is a cross-sectional view when an uneven surface is coated. 10A and 10B are external views of a roller brush assembly including five divided rollers, where FIG. 10A is in a normal state, FIG. 10B is a state in which the divided rollers are separated from each other, and FIG. 10C is a part of FIG. It is an enlarged view.
As shown in FIG. 9, the roller brush assembly 60 is adjacent to a plurality of divided rollers 60 a including a divided solid cylinder 61 and a roller brush 62 fitted on the outer periphery of the divided solid cylinder 61. The tension roller 61a includes a tension spring 61b that applies a pulling force to the divided rollers 60a, and a flexible tube 65 that penetrates the axial center holes of the plurality of adjacent divided rollers 60a.
The divided solid cylindrical body 61 is formed of a solid material such as a synthetic resin or a metal, and extends only radially in a radial direction from a plurality of shaft center holes 63 penetrating the shaft center. It has a solid structure in which a paint supply passage is formed by the radiation holes 64, and annular concave portions 61a are provided on both side surfaces, and a tension spring 61b is attached to the concave portions 61a. Are pulled apart from each other, but as can be seen from the enlarged view of FIG. 10C, when an external force is applied, the divided rollers 60a can be separated from each other.
As shown in FIG. 3, the radiation holes 64 extend in the radial direction one by one every 90 degrees around the axial center hole 63, and are constituted by a total of four radiation holes. Of course, the number is not limited to four, and the diameter of the holes can be freely determined depending on the viscosity of the paint used.
One flexible Teflon tube 65 penetrates the inside of each shaft center hole 63 and each tension spring 61b. In each shaft center hole 63, the Teflon tube 65 is attached to each shaft center hole 63 in close contact with the hole formed in the Teflon tube 65 and the radiation hole 64 extending from the center hole 63.
By doing so, the paint is smoothly supplied into the radiation holes 64 of each of the divided rollers 60a, and the tension spring 61b is not stained with the paint.
[0035]
Since each outlet of the radiation hole 64 is formed with a groove that goes circumferentially from the outlet, the paint coming out of the radiation hole 64 easily spreads in the circumferential direction through the circumferential groove, so that the paint can be made faster. Since it spreads uniformly over the entire surface of the roller, it contributes to uniform application.
The outermost divided solid cylindrical body 61 is provided with a disk 66 having a flange 66a formed on the outer periphery and a female screw 66b formed on the inner periphery.
The roller brush 62 has a synthetic resin fiber adhered or planted on a drum 68 made of rigid synthetic resin, metal, or the like. The drum 68 has a plurality of holes formed in its peripheral wall so as to match the grooves.
[0036]
The roller brush assembly 60 has the gasket 61c attached to the flange 66a of the divided solid cylindrical body 61, and the roller brush 62 is fitted from the other end of the divided solid cylindrical body 61, and then divided. The disk 66 is engaged with the other end of the solid cylindrical body 61 via a gasket 61c, and the bolt 69 is screwed into the female screw 66b of the divided solid cylindrical body 61, and is pulled together by the tension spring 61b to form an integral body. Be transformed into
[0037]
As shown in FIGS. 9 and 10 (a), the coating of a flat surface is performed while the divided rollers 60a rotate side by side on the same axis and supply the paint from both ends. This case is the same as in FIG.
Next, when the uneven surface is painted, as shown in FIG. 9B, a flexible Teflon tube 65 is used to resist the frictional force in the direction perpendicular to the tensile force of the tension spring 61b and to provide a flexible structure. Since each of the divided rollers 60a is shifted from each other so as to follow a shape corresponding to the unevenness, it is possible to paint along the uneven surface.
[0038]
If the second and third embodiments are implemented by using the split-type roller brush assembly 60 in FIG. 9 instead of the roller brush assembly 10 in FIG. 2, it goes without saying that the effect is further increased. Absent.
[0039]
(Fourth Embodiment of the Invention)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. The fourth embodiment relates to automatic coating, and is provided by installing the curved surface compatible roller type coating apparatus according to the third embodiment at the tip of a robot arm.
FIG. 11 is a schematic configuration diagram showing an automatic coating device, and FIG. 12 is a block diagram of the central control device of FIG.
In FIG. 11, reference numeral 70 denotes an automatic coating device, 71 denotes a coating robot, 72 denotes a roller-type coating device corresponding to a curved surface mounted on a tip of a movable portion of the coating robot 71, 73 denotes a pump for feeding a paint, 731 denotes a pump control device, Numeral 74 denotes a robot body, which uses a multi-joint type teaching playback type robot. The robot main body 74 includes a movable part (robot arm) 741 operatively connected thereto, and the robot operation is controlled by a robot controller 742. The robot control device 742 receives a control command from the central control device 75 and controls the robot operation of the robot body 74. 76 is a temperature sensor for sensing the temperature of the coating environment, and 77 is a humidity sensor for sensing the humidity of the coating environment. The detection signals of the temperature sensor 76 and the humidity sensor 77 are sent to the central controller 75.
[0040]
In FIG. 12, reference numeral 75 denotes a central control unit, which includes a CPU 750 for controlling the system of the entire automatic coating apparatus such as processing of received temperature / humidity data, decoding of data in RAM, pump control and robot control, and an environment. RAM 751 for storing data on temperature, humidity, type of paint, viscosity, paint pressure for pumping paint, paint pressure, etc., ROM 752 for storing arithmetic processing procedures of the CPU 750, and current operation status and keyboard input values. A display device 753 for displaying, a keyboard 754 for inputting and changing data, and an interface 755 for exchanging signals with external devices are provided. The external devices include a temperature sensor 76 that senses the temperature of the coating environment, a humidity sensor 77 that senses the humidity of the coating environment, a pump controller 731, and a robot controller 742.
[0041]
Next, the operation of the automatic coating device 70 will be described.
Now, the user inputs the coating conditions of the object to be coated (for example, which coating should be used and what film thickness should be applied) from the keyboard. On the other hand, detection signals are sent from the temperature sensor 76 and the humidity sensor 77 to the central controller 75. Therefore, the central control unit 75 calculates the optimum paint discharge amount from the pump, the optimum pressure and the moving speed of the coating roller, etc. to satisfy the coating conditions, based on the coating conditions and the detection signals from each sensor, and controls each of them. The command is given to the pump control device 731 and the robot control device 741. The pump controller 731 controls the pump 73 accordingly to adjust the amount of paint to be fed, and the robot controller 741 controls the robot main body 74 accordingly to adjust the pressing force and the moving speed of the roller.
[0042]
In addition, depending on the viscosity of the paint, the paint supplied to the surface of the application roller is moved below the application roller by gravity, so before starting the application, the application roller is reciprocated several times on another contact surface in advance, It is preferable to perform a leveling motion to evenly level the paint collected below.
[0043]
In this manner, the movable portion 741 of the robot main body 74 moves, so that the curved surface corresponding roller type coating device 72 provided at the end thereof also moves. At this time, even if the application surface has irregularities, the roller-type coating device 72 for a curved surface according to the present invention follows the irregularities on the application surface, so that uniform application of the film thickness is performed.
As described above, according to this embodiment, it is possible to perform coating with a much more uniform film thickness as compared with the conventional automatic spray method.
Further, since the coating is performed only at the portions where the rollers pass, dust unlike the conventional spray type is not generated at all.
Further, the robot body 74 does not need to recognize the unevenness state of the coating surface and move the movable portion 741 up and down in accordance with the unevenness state of the coating surface. There is also an effect.
The same can be said for a curved surface having a gradient in the left-right direction, since it is only necessary to move in a horizontal direction, so that the control is significantly simplified.
[0044]
As described above, according to the present invention, it is not necessary to perform roller painting by hand, and therefore, the paint can be uniformly applied to the entire roller. This eliminates the repetition of the work of infiltrating, which is advantageous in terms of reducing labor costs, shortening the working time, shortening the painting booth, and the like.
In addition, the roller type coating apparatus and the automatic coating apparatus of the present invention can be used for a roller-coated object to be coated without any particular limitation. Specifically, the present invention can be applied to vehicles, construction, ships, furniture, roads, and the like.
In the case of a vehicle-related automobile body, the invention can be applied not only to a hood, a roof, and a trunk but also to a vertical bumper, a fender, a door, and the like using a protective material or a scratch-resistant material.
Further, as the coating material used in the present invention, a coating material which has been conventionally subjected to roller coating can be used without any particular limitation. Specifically, a water-based paint, an organic solvent paint and the like can be mentioned.
[0045]
【The invention's effect】
As described above, according to the application roller of the first aspect, the volume occupied by the paint in the solid cylinder is small, and the roller shaft unlike the conventional device is not required. The remaining amount is small, paint waste is reduced, maintenance is easy, and the number of parts can be reduced.
According to the invention of the application roller according to the second aspect, since it is possible to follow even a curved surface having a locally uneven shape, it is possible to apply the finely even a curved surface having an uneven shape.
According to the third aspect of the present invention, the paint coming out of the radiation hole spreads quickly in the circumferential direction through the circumferential groove, and as a result, the paint spreads uniformly over the entire surface of the roller, thereby contributing to uniform application. It will be.
[0046]
According to the invention of the roller type coating apparatus according to claim 4, since the coating material is supplied from both ends of the coating roller and supported at both ends, the liquid pressure becomes uniform over the entire shaft center hole passing through the shaft center, Further, since the pressing force applied to the application roller is uniform, the paint can be uniformly distributed to the entire roller.
[0047]
According to the roller-type coating device according to the fifth aspect of the present invention, the roller brush is displaced following the coating surface by the revolvable support mechanism, so that coating without unevenness can be performed, and the roller brush can be fixed by the vertically movable support mechanism. Can be brought into contact with the application surface with the above pressure, so that application with a uniform thickness can be performed.
According to the invention of the roller application device according to the sixth aspect, since the application roller according to the first or second aspect is used, the remaining amount of the coating material is small, the waste of the coating material is reduced, and the maintenance is simple. Since the paint is spread evenly over the entire surface of the roller, the uniformity is further improved and the usability is improved.
[0048]
According to the invention of the roller type automatic coating apparatus according to the seventh aspect, the robot operation (the number of rotations of the roller brush, the pressing pressure) and the coating are performed in consideration of the viscosity, film thickness, coating environment (temperature, humidity, etc.) of the coating. The supply amount, the supply pressure, and the like of the toner can be automatically and appropriately set, and uniform roller coating can be automatically performed even on a curved coating surface.
[Brief description of the drawings]
FIG. 1 is a perspective view conceptually showing an application device including an application roller according to a first embodiment of the present invention.
2 is an axial longitudinal sectional view of the roller brush assembly shown in FIG. 1;
FIG. 3 is a view taken in the direction of arrows AA in FIG. 2;
FIG. 4 is an example in which the number of radiation holes is reduced by the present invention, (a) to (f) show 2 to 8, respectively, and (g) shows a conventional roller.
FIG. 5 is an exploded perspective view of the roller brush assembly 10 shown in FIG.
FIGS. 6A and 6B are schematic diagrams illustrating the operation of the pivotable support mechanism 40 of FIG. 5, wherein FIG. 6A shows a state in which rollers roll on a flat surface, and FIG. (C) shows a state in which the roller rolls on a curved surface rising left in the figure.
FIG. 7 shows a vertically movable support mechanism 50 according to a third embodiment.
8A and 8B are schematic diagrams illustrating the operation of the vertically movable support mechanism 50 of FIG. 7, wherein FIG. 8A shows a state of rolling on a low surface, and FIG. 8B shows a state of rolling on a high surface.
FIGS. 9A and 9B are cross-sectional views of a modified example of the roller brush assembly of FIG. 2, in which FIG. 9A shows a case where a flat surface is coated, and FIG.
10A and 10B are external views of a roller brush assembly including five divided rollers, where FIG. 10A is in a normal state, FIG. 10B is a state in which the divided rollers are separated from each other, and FIG. It is a part enlarged view.
FIG. 11 is a schematic configuration diagram illustrating an automatic coating apparatus according to a fourth embodiment.
FIG. 12 is a block diagram of the central control device of FIG. 11;
FIG. 13 is a perspective view of a known roller type coating apparatus.
FIG. 14 is an exploded perspective view of the roller type coating apparatus of FIG.
FIG. 15 is a plan view showing a known roller-type coating apparatus which is both-end feeding and both-end supporting.
[Explanation of symbols]
10 Roller brush assembly
11 Solid cylinder
12 roller brush
13 shaft center hole
14 Radiation hole
15 grooves
16 Flange
17 Internal thread
18 drums
19 holes
20,21 Gasket
22 disk
23 volts
24 Paint pressure pipe
30 support
31 arm
32 Lower frame
33 Intermediate frame
33a Intermediate frame base
34 Upper frame
40 Swivel support mechanism
41 boards
42 pins
50 Vertically movable support mechanism
51 arm
52 pins
53 spring
54 Adjustment screw
60 roller brush assembly
61 divided solid cylinder
61a Split roller
61b Extension spring
61c gasket
62 roller brush
63 Shaft center hole
64 radiation hole
65 Teflon tube
66 disk
66a flange
66b female screw
68 drums
69 volts
70 automatic coating equipment,
71 Coating robot
72 Roller type coating device for curved surface
73 Paint pump
731 Pump control device
74 Robot body
741 movable part
742 robot controller
75 Central control unit
750 CPU
751 RAM
752 ROM
753 display device
754 keyboard
755 interface
76 Temperature sensor
77 Humidity sensor
A Coating surface

Claims (7)

A solid cylindrical body leaving a shaft center hole penetrating the shaft center and radial holes radially extending from a plurality of locations of the shaft center hole, and a roller attached to the outer periphery of the solid cylinder A coating roller comprising: a brush. A solid cylindrical body leaving a shaft center hole penetrating the shaft center and radial holes radially extending from a plurality of locations of the shaft center hole, and a roller brush attached to the outer periphery of the solid cylinder A plurality of divided roller brush assemblies, an elastic body for attracting the divided roller brush assemblies, and a flexible tube penetrating through the axial center holes of all the divided roller brush assemblies. A coating roller, wherein a hole formed in the flexible tube is aligned with the radiation hole. The coating roller according to claim 1, further comprising a circumferential groove connected to an outlet of the radiation hole on a surface of the solid cylindrical body. The coating roller according to any one of claims 1 to 3, a coating material feeding pipe connected to both ends of the shaft center hole of the solid cylindrical body of the coating roller, and the coating roller for coating. A roller type coating device comprising: an arm portion rotatably supported at both ends of the roller. A coating roller, a coating tube for feeding coating material from both ends of the coating roller to the inside, an arm portion rotatably supporting the coating roller at both ends of the coating roller, and applying the arm portion to the coating portion. A pivotable support mechanism that pivotally supports a plane parallel to a vertical plane including the axis of the roller for use, and a vertically movable support mechanism that supports the arm portion to be movable in the vertical direction. Roller type coating device for curved surfaces. A roller type coating apparatus according to any one of claims 1 to 3, wherein the coating roller according to any one of claims 1 to 3 is used as the coating roller according to claim 5. A three-dimensional mobile robot capable of moving in a three-dimensional direction, wherein the three-dimensional mobile robot is provided with the roller corresponding to the curved surface according to claim 5, a robot controller for controlling the three-dimensional mobile robot, and the roller corresponding to the curved surface A roller type automatic coating device, comprising: a pump control device for controlling a flow rate of the coating material to be fed to the coating device.

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