JP2023168199A - Application device and application method - Google Patents

Abstract

To provide an application device which can apply paint to a rising part while suppressing a cost.SOLUTION: An application device 1 for applying paint to a road surface 50 or floor surface by a spray gun 3 comprises: a carriage 10 which includes wheels 11, 12 and can travel; a laterally-reciprocating mechanism 20 which is provided in the carriage and has a slider part 23 that can reciprocate in the width direction of the carriage; a shaking head 30a which is provided in the slider part and can perform the shaking operation to the further outer side from an operation end of the laterally-reciprocating mechanism; a spray gun which is provided in the shaking head; and a control unit 4 which controls at least the operation of the laterally-reciprocating mechanism. The application device can apply paint to not only a road surface or floor surface but also a rising part 51 of a side surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a coating device for applying paint to a road surface such as a road base or a floor surface such as a building rooftop using a spray gun.

Conventionally, Japanese Patent Application Laid-Open No. 2020-000964 discloses that a device is placed on a trolley, with the aim of making it easier to transport the device by making it smaller when it is not in operation, and coating a wider area than the width of the device when it is in operation. A waterproof layer coating device is disclosed that includes an articulated robot that can move in a wider range than the width of the robot, and a spray gun that is disposed at the tip of a manipulator of the articulated robot. Furthermore, this waterproof layer coating device can coat rising portions of walls and the like at the same time as road surfaces and the like.

Japanese Patent Application Publication No. 2020-000964

However, since the device disclosed in Patent Document 1 uses an articulated robot, the device tends to be expensive. The present invention has been made in view of the above points, and an object of the present invention is to provide a coating device that uses a left-right reciprocating mechanism instead of an articulated robot to reduce the cost of the device and can also coat rising parts. shall be.

The coating device of the present invention includes:
A coating device that applies paint to a road or floor surface with a spray gun,
A cart equipped with wheels and capable of traveling,
a left-right reciprocating mechanism provided on the truck and including a slider part that is reciprocatable in the width direction of the truck;
a swinging head provided on the slider portion and capable of swinging further outward from the operating end of the left-right reciprocating mechanism;
a spray gun provided on the oscillating head;
A control unit that controls at least the operation of the left-right reciprocating mechanism,
It is characterized in that it can be applied not only to the road or floor surface but also to the rising parts of the side surfaces.

According to the coating device of the present invention, since the oscillating head swings outward, the paint can be simultaneously applied to the rising portions of the end of the floorboard, the side walls, and the like. Further, the swinging head is provided on the slider portion of the left-right reciprocating mechanism, which allows the structure to be relatively simple, which is advantageous in terms of cost.

A preferred example of the coating device of the present invention is:
a rotation shaft that pivotally supports the swinging head above the center of gravity of the swinging head;
When the swinging head reaches the operating end of the left-right reciprocating mechanism, it swings due to its inertia.

According to a preferred example of the coating device of the present invention, since the swinging head performs swinging motion due to its inertia, the structure of the device can be made simpler.

A preferred example of the coating device of the present invention is:
The apparatus includes an angle regulating part that adjustably regulates the angle of the swinging motion of the swinging head.

According to a preferred example of the coating device of the present invention, since the angle regulating portion is provided, there is no need to apply unnecessary coating on the rising portion. Further, even when the rising portion is only on one side of the left or right side, the angle regulating section allows the swinging motion to be made only on the side where the rising portion is located.

A preferred example of the coating device of the present invention is:
The slider includes a spring attached to the slider portion and the oscillating head, and suppresses the oscillating head from performing an oscillating operation at a location other than the operating end of the left-right reciprocating mechanism.

A preferred example of the coating device of the present invention is:
A damper is provided that is attached to the slider portion and the swinging head, and suppresses the swinging head from swinging at a location other than the operating end of the left-right reciprocating mechanism.

A preferred example of the coating device of the present invention is:
the damper is a fluid cylinder;
One end of the fluid cylinder is rotatably supported by the slider section, and the other end is rotatably supported by the oscillating head.

A preferred example of the coating device of the present invention is:
the damper is a fluid cylinder;
The fluid cylinder is provided with its axis vertically on a vertical line passing through the rotation axis, one end of the fluid cylinder is rotatably supported by the slider part, and the other end is rotatably supported by the slider part. It is rotatably supported by the swing head.

A preferred example of the coating device of the present invention is:
comprising a speed adjustment mechanism that adjusts the expansion and contraction speed of the piston rod of the fluid cylinder,
The speed adjustment mechanism is
an outflow port and an inflow port provided on the proximal end side and the distal end side of the cylinder portion of the fluid cylinder, respectively;
an extension side piping that connects the outflow port on the distal end side and the inflow port on the proximal end side;
an extension side adjustment valve that adjusts the flow rate of the extension side piping; a contraction side piping that connects the base end side outflow port and the distal end side inflow port;
A contraction side adjustment valve that adjusts the flow rate of the contraction side piping.

According to these preferred examples of the coating device of the present invention, the oscillating head does not make unnecessary oscillating movements at locations other than the operating ends of the left-right reciprocating mechanism, so uneven coating of the paint is reduced and the film thickness is stabilized. .

A preferred example of the coating device of the present invention is:
A weight is provided on the swinging head at a predetermined distance downward from the swinging shaft, and the swinging motion of the swinging head is controlled by the distance between the swinging shaft and the weight and/or the weight of the weight. Adjust return speed.

According to a preferred example of the coating device of the present invention, the speed of the swinging motion of the swinging head, etc. can be adjusted to any desired state using the weight.

A preferred example of the coating device of the present invention is:
A temporary holding part is provided for holding the swinging head with a force weaker than the inertial force when the swinging head reaches the operating end of the left-right reciprocating mechanism when the swinging head is in the neutral position.

According to a preferred example of the oscillating head of the present invention, the temporary holding portion suppresses excessive movement of the oscillating head at the neutral position, eliminating unevenness in film thickness.

A preferred example of the coating device of the present invention is:
a rotation shaft that pivotally supports the oscillating head;
a head actuator for swinging the swinging head;
When the slider portion reaches the operating end, the head actuator is operated to swing the swinging head.

According to a preferred example of the coating device of the present invention, since the head actuator performs the swinging motion of the swinging head, the swinging motion can be performed accurately and at any timing.

The coating method of the present invention includes:
A coating method using the coating device according to the above invention, comprising:
While running the trolley,
a first horizontal application step of spraying and applying paint from the spray gun onto a road surface or floor surface while the slider portion moves toward an operating end;
a vertical coating step in which the oscillating head oscillates outward to apply the rising portion when the slider portion reaches the operating end;
a second horizontal coating step of starting an operation of moving the slider part to the opposite operating end before the end of the vertical coating step, and coating the road or floor surface while gradually returning the oscillating head to a neutral position; , including;
The method is characterized in that the vertical coating step and the second horizontal coating step are repeated.

A preferred example of the coating method of the present invention is:
Before the slider reaches the operating end, the moving speed of the slider is slowed down to start the swinging motion of the swinging head.

The coating method of the present invention includes:
A coating method using the coating device according to the above invention, comprising:
While running the trolley,
a first horizontal application step of spraying and applying paint from the spray gun onto the road surface or floor surface while the slider portion moves toward the operating end of the left-right reciprocating mechanism;
a vertical coating step in which the swinging head swings outward by the head actuator to coat the rising portion when the slider reaches the operating end;
A second horizontal coating process that starts an operation of moving the slider part toward the opposite operating end before the end of the vertical coating process, and coats the road or floor surface while gradually returning the swinging head to a neutral position. The process includes;
The method is characterized in that the vertical coating step and the second horizontal coating step are repeated.

A preferred example of the coating method of the present invention is:
The swinging motion of the swinging head is started before the slider section reaches an end of motion.

According to these coating methods of the present invention, the same effects as those of the coating device described above can be achieved. In addition, the second horizontal coating process is started without waiting for the vertical coating process to finish, and the oscillating head returns to the neutral position while coating the road or floor surface, making it possible to adjust the film thickness at the rising part. , it is possible to suppress sudden changes in film thickness on the road or floor surface. Furthermore, the same effect can be achieved by a mode in which the swinging head swings before the slider reaches the operating end.

As described above, according to the coating device and coating method of the present invention, it is possible to coat even rising portions while suppressing the cost of the device.

FIG. 1 is a front view of a coating device according to an embodiment of the present invention. It is a top view of a coating device. FIG. 3 is a side view of the coating device. FIG. 3 is a diagram illustrating the periphery of the swinging head. FIG. 7 is another diagram illustrating the periphery of the swinging head. FIG. 7 is another diagram illustrating the periphery of the swinging head. FIG. 7 is another diagram illustrating the periphery of the swinging head. FIG. 7 is another diagram illustrating the periphery of the swinging head. FIG. 7 is another diagram illustrating the periphery of the swinging head. FIG. 7 is another diagram illustrating the periphery of the swinging head. FIG. 3 is a diagram illustrating a coating method according to an embodiment of the present invention. FIG. 7 is another diagram illustrating the coating method. FIG. 7 is another diagram illustrating the coating method. FIG. 7 is another diagram illustrating the coating method. FIG. 7 is another diagram illustrating the coating method. FIG. 7 is another diagram illustrating the coating method. It is a figure explaining the application method concerning other embodiments.

EMBODIMENT OF THE INVENTION Hereinafter, embodiments of the coating device 1 and coating method of the present invention will be described in detail with reference to the accompanying drawings. In addition, the coating method of this embodiment is implemented using the coating apparatus 1 based on this embodiment.

First, an embodiment of the coating device 1 will be described with reference to FIGS. 1 to 4. In the coating device 1 of this embodiment, a two-component mixed type paint consisting of a base agent and a curing agent is sent from a pressure feeding device (not shown) through a hose 2, and is sprayed from a spray gun 3 onto a road surface 50 or floor surface, and on rising parts. 51 (see FIG. 11). This paint also includes liquid agents such as waterproofing agents. Further, the hose 2 that supplies the paint to the spray gun 3 is only shown in FIG. 1, and other parts are omitted for clarity. The coating device 1 of this embodiment includes a cart 10, a left-right reciprocating mechanism 20, an oscillating head 30a, a spray gun 3, a control unit 4, and a scattering prevention cover 5.

The trolley 10 is equipped with wheels and is configured to be able to run on a road surface 50 or a floor surface, and in this embodiment has a substantially home base shape when viewed from above. As for the wheels, one front wheel 11 is provided on the traveling direction side of the trolley 10, and two rear wheels 12 are provided near the ends in the left and right direction on the opposite side to the traveling direction. A driving motor 13 and a steering handle 14 are attached to the front wheels 11, and the handle 14 is equipped with an accelerator and a brake (not shown). However, traveling and steering can also be performed automatically by the control unit 4. Near the center of the truck 10, a hose support portion 15 for supporting the hose 2 is provided upright.

The left-right reciprocating mechanism 20 is provided on the rear upper surface of the truck 10 and includes a slider section 23 that can reciprocate in the width (left and right) direction of the truck 10, and also includes a drive section 21 and a slide rail 22. The drive section 21 provides power for the slider section 23 to move in the width direction. The drive unit 21 employs, for example, a mechanism that uses a rack and pinion gear, a mechanism that uses one or more pairs of sprockets that extend across the width of the truck 10, and a chain that is attached to the sprockets (none of which are shown). As already mentioned, the slider section 23 is driven by the drive section 21 and reciprocates in the width direction of the truck 10. This slider portion 23 is provided with a slide base 24 . In this embodiment, an angle regulating section 32 (see FIG. 5), a spring 35 (see FIG. 6), etc., which will be described later, are attached to the slide base 24. Further, the hose 2 is fastened to the slider portion 23 or the slide base 24 halfway up to the spray gun 3, thereby suppressing the movement of the oscillating head 30a from being hindered by the weight or resistance of the hose 2. The slide rail 22 is a member that extends in the width direction of the truck 10, and the slider portion 23 slides thereon. Further, the left and right reciprocating mechanism 20 is provided with operating ends 25a and 25b that are constituted by limit switches and the like. In this embodiment, the operating ends 25a and 25b are provided on the slide rail 22, and by setting the operating ends 25a and 25b at arbitrary positions, the movable range of the slider portion 23 can be adjusted.

Next, the oscillating head 30a and the vicinity of the oscillating head 30a will be described with reference to FIGS. 4(A) to 4(C). 4(A) is a plan view of the slider portion 23 and the periphery of the oscillating head 30a, FIG. 4(B) is a front view, and FIG. 4(C) is a side view (the same applies to FIGS. 5 to 10). . The swinging head 30a is provided on the slider portion 23 and is capable of swinging further outward from the operating ends 25a, 25b of the left and right reciprocating mechanism 20. In order to realize this swinging motion, in this embodiment, the slider portion 23 and the swinging head 30a are provided with a rotation shaft 31 that pivotally supports the swinging head 30a above its center of gravity. The rotation shaft 31 is disposed horizontally and in a direction along the traveling direction of the truck 10, and pivotally supports the swinging head 30a with respect to the slider portion 23 so as to be able to swing. When the slider section 23 reaches the operating ends 25a, 25b of the slide rail 22, the swinging head 30a swings outward due to its inertia. Note that which of the slide base 24 and the swinging head 30a should be fixed to the rotating shaft 31 and which should be rotatable can be selected depending on the embodiment at that time.

Next, a swinging head 30b according to another embodiment will be described with reference to FIGS. 5(A) to 5(C). This embodiment includes an angle regulating section 32 that adjustably regulates the angle of the swinging motion of the swinging head 30b. As this angle regulating part 32, for example, a stop plate 33 is provided on the back surface of the swinging head 30b, and a pair of regulating bolts 34 is provided on the slide base 24, and when the stop plate 33 contacts the regulating bolts 34, the swinging movement is controlled. It is possible to have a configuration that regulates the angle. In this case, the swinging range of the swinging head 30b can be adjusted by changing the protruding length of the regulating bolt 34. Furthermore, when the swinging head 30b is in the neutral position shown in FIG. It is possible to swing the head on only one side of the left or right side. Note that a cushioning material such as rubber may be provided on the wide surface of the stop plate 33 or at the tip of the regulating bolt 34.

Further, in the embodiment shown in FIG. 5(D), the other angle regulating portion 132 is provided so that the swinging head 30b stops at a vertical neutral position. The angle regulating part 132 includes a temporary holding part 139 that holds the swinging head 30b with a force weaker than the inertial force when the swinging head 30b reaches the end of the movement of the left-right reciprocating mechanism 20 when the swinging head 30b is in the neutral position. provided. As this temporary holding portion 139, a magnet 139 is employed in this embodiment. As a result, when the swinging head 30b is in the neutral position, the stop plate 33 is attracted by the magnet 139, and the swinging head 30b does not make any unnecessary movement. Furthermore, when the swinging head 30b reaches the end of the movement of the left-right reciprocating mechanism 20, its inertial force shakes off the attraction of the magnet 139 and swings outward. In addition to the above-mentioned magnet, the temporary holding part 139 may be formed by fitting a spherical body protruded by a spring provided on the slide base 24 into a recess provided on the back surface of the stop plate 33 (see FIG. (not shown). In this case, even if the angle regulating section 32 is arranged as shown in FIG. 5(B), the swinging head 30b can be held at the neutral position by the temporary holding section 139.

Next, a swinging head 30c according to another embodiment will be described with reference to FIGS. 6(A) to 6(C). This embodiment includes a spring 35 and/or a damper 36 attached to the swinging head 30c to prevent the swinging head 30c from making unnecessary swinging motions at locations other than the operating ends 25a and 25b of the left and right reciprocating mechanism 20. It's suppressed. To explain in detail, a pair of springs 35 are provided on the left and right sides of the slide base 24, one end of which is attached near the left and right ends of the slide base 24, and the other end attached to the back side of the swinging head 30c. The force of the pair of springs 35 pulling against each other attempts to maintain the swinging head 30c at the neutral position shown in FIG. 6(B). Further, in this embodiment, a rotary damper 36 is used as the damper 36, and is provided at a portion where the rotation shaft 31 and the swinging head 30c are attached. Then, due to the resistance of the rotary damper 36, the oscillating head 30c quickly returns to the neutral position. Note that, as an example of attaching a rotary damper, the actuator 40 shown in FIGS. 10(A) to 10(C) may be replaced with a rotary damper.

Next, a swinging head 30f according to another embodiment will be described with reference to FIGS. 7(A) and 7(B). Note that the side view (C) is omitted in this figure. In this embodiment, a fluid cylinder 60 is used as a damper in the oscillating head 30f. One end of the fluid cylinder 60 is rotatably supported by the slider portion 23, and the other end is rotatably supported by the swinging head 30f. Specifically, the base end side of the cylinder portion 61 of the fluid cylinder 60 is pivotally supported by a pin member 63 on the slide base 24f, which has a substantially inverted L shape when viewed from the front. Further, the tip end side of the piston rod 62 is pivotally supported by a pin member 64 on the oscillating head 30f. With these configurations, when the spray gun 3 swings to the left in FIG. 7(B) (arrow a), the fluid cylinder 60 extends, and when the spray gun 3 swings to the right (arrow b), the fluid cylinder 60 contracts. This resistance of the fluid cylinder 60 suppresses excessive swinging motion of the swinging head 30f.

Next, a swinging head 30g according to another embodiment will be described with reference to FIGS. 8(B) and 8(C). Note that the plan view (A) is omitted in this figure. In this embodiment, a fluid cylinder 60 is used as a damper in the oscillating head 30g. The fluid cylinder 60 is provided on a vertical line passing through the rotation shaft 31 with its axis oriented vertically. Further, one end of the fluid cylinder 60 is rotatably supported by the slider portion 23, and the other end is rotatably supported by the swinging head 30g. Specifically, the base end side of the cylinder portion 61 of the vertically arranged fluid cylinder 60 is pivotally supported by a pin member 65 on the slide base 24g extending upward. Further, the tip end side of the piston rod 62 is pivotally supported by a pin member 66 on the oscillating head 30g.

In this way, since the rotating shaft 31 and the two pin members 65 and 66 are arranged on the vertical line, when the swinging head 30g tries to swing outward from the neutral position shown in FIG. 8(B), , the fluid cylinder 60 moves in the extending direction on either the left or right side. On the other hand, when the oscillating head 30g attempts to return to the neutral position from the position where it has swung outward, the fluid cylinders 60 on either the left or right side move in the direction of contraction. Thereby, when the swinging head 30g swings left and right, the fluid cylinder 60 can be operated under the same conditions regardless of whether the swinging head 30g swings left or right. This is because the fluid cylinder 60 has a rod attached to one of its internal pistons, and the area receiving hydraulic pressure is reduced by the rod, so there is a difference in resistance between the extension side and the contraction side. In this embodiment, from the above, there is no need to consider the difference between the extension side and the contraction side of the fluid cylinder 60. Note that in order to adjust the internal volume when the piston rod 62 moves in and out of the cylinder section 61, a gas chamber (not shown) can be provided in the middle of the piping of the cylinder section 61 or the speed adjustment mechanism 70. Alternatively, the piston rods 62 may be provided on both sides of a piston (not shown) and may also be made to protrude from the base end side of the cylinder portion 61.

Further, the swinging head 30g of this embodiment includes a speed adjustment mechanism 70 that adjusts the speed of expansion and contraction of the piston rod 62 of the fluid cylinder 60. This speed adjustment mechanism 70 includes two outflow ports 75 and 76 and two inflow ports 77 and 78, an extension side pipe 71, an extension side adjustment valve 72, a contraction side pipe 73, and a contraction side adjustment valve 74. . Outflow ports 75, 76 and inflow ports 77, 78 are holes through which fluid (oil) enters and exits from cylinder portion 61, and are provided on the base end side and distal end side of cylinder portion 61, respectively. The extension side pipe 71 is a pipe that returns oil flowing out from the outlet port 75 on the distal end side of the cylinder section 61 to the cylinder section 61 through the inlet port 77 on the proximal end side when the piston rod 62 moves in the extension side ( Arrow c) connects the distal side outlet 75 and the proximal side inlet 77. The extension side regulating valve 72 is for adjusting the flow rate of oil flowing through the extension side piping 71, and is provided in the middle of the extension side piping 71 in this embodiment. By changing the opening degree of this extension side adjustment valve 72, the movement of the piston rod 62 on the extension side can be adjusted.

The contraction side piping 73 is a piping that returns oil flowing out from the outlet port 76 on the base end side of the cylinder section 61 to the cylinder section 61 through the inlet port 78 on the distal end side when the piston rod 62 moves toward the contraction side ( Arrow d) connects the proximal outlet 76 and the distal inlet 78. The contraction side regulating valve 74 adjusts the flow rate of oil flowing through the contraction side piping 73, and is provided in the middle of the contraction side piping 73 in this embodiment. By changing the opening degree of the contraction side adjustment valve 74, the movement of the piston rod 62 on the contraction side can be adjusted. In addition, the speed adjustment mechanism 70 has one of the outflow port 75, the extension side piping 71, the extension side adjustment valve 72, and the inflow port 77, so that the oil flows from the outflow ports 75 and 76 toward the inflow ports 77 and 78. A check valve (not shown) is provided at either the outflow port 76, the contraction side piping 73, the contraction side adjustment valve 74, or the inflow port 78. Furthermore, both the expansion side regulating valve 72 and the contraction side regulating valve 74 can be provided at the outflow ports 75 and 76 or the inflow ports 77 and 78 instead of in the middle of the piping. Furthermore, the speed adjustment mechanism 70 described above can also be used in the fluid cylinder 60 shown in FIG.

Next, a swinging head 30d according to another embodiment will be described with reference to FIGS. 9(A) to 9(C). In this embodiment, a weight 38 is provided on the swinging head 30d at a predetermined distance downward from the rotation shaft 31. Specifically, it includes a hanging rod 37 hanging down from the back side of the swinging head 30d, and a weight 38 provided below the hanging rod 37. The distance between the weight 38 and the rotating shaft 31 and the weight of the weight 38 can be set to arbitrary values. The swinging speed and return speed of the swinging motion of the swinging head 30d can be adjusted by the distance between the rotating shaft 31 and the weight 38 and/or the weight of the weight 38. The period and return speed of the swinging motion are theoretically determined by the distance between the weight 38 including the hanging rod 37 and the rotating shaft 31, but in reality they are determined by the distance between the hose 2 connected to the spray gun 3 and the rotating shaft. 31 resistance. Therefore, by making the weight 38 heavier, it can be made less susceptible to the effects of these resistances. Note that the hanging rod 37 alone may be used instead of the weight 38. It is also possible to use any combination of at least two of the embodiments shown in FIGS. 5 to 9.

Next, a swinging head 30e according to another embodiment will be described with reference to FIGS. 10(A) to 10(C). This embodiment includes a rotation shaft 31 that pivotally supports the swinging head 30e, and a head actuator 40 for swinging the swinging head 30e. As an example of this head actuator 40, a head actuator 40 equipped with an electric motor or the like is placed on the slider section 23, and the output shaft 43 and rotation shaft 31 of this actuator are connected by a belt 41 and a pulley 42. It is configured. Then, when the slider section 23 reaches the operating ends 25a, 25b of the left-right reciprocating mechanism 20, or when the slider section 23 is at an arbitrary position, the head actuator 40 is operated to swing the swinging head 30e. . In this embodiment, since the swinging head 30e swings without relying on inertia, it is not necessary to arrange the rotating shaft 31 above the center of gravity of the swinging head 30e. It is preferable to be near the center of gravity. In addition to the belt 41 and pulley 42 described above, known methods such as gears and link mechanisms may be used to drive the oscillating head 30e, or a fluid cylinder 60 shown in FIGS. 7(A) and 7(B) may be used. It can be replaced with a cylinder type actuator, etc. Furthermore, it is also possible to configure the output shaft 43 to be used as the rotation shaft 31 as it is.

Returning to FIGS. 1 to 3, the spray gun 3 is attached to a swinging head 30a with its tip facing downward, and mixes the base agent and curing agent sent from the two hoses 2 therein. It is sprayed onto the road surface 50, etc.

The control unit 4 includes, for example, a programmable controller including a CPU, a memory, an input/output circuit, etc., or a contact sequence, and controls the operation of the coating device 1 of this embodiment. The objects to be controlled include, for example, the operation of the left-right reciprocating mechanism 20, the operation of the head actuator 40, the operation of the spray gun 3, and the like. In this embodiment, the control unit 4 is placed on the trolley 10, but it may be placed in another location and connected to each component using a control wire, a power wire, or the like.

The anti-scattering cover 5 covers the operating range of the slider portion 23 and prevents paint from scattering. In this embodiment, the side surfaces in the left and right directions are open so that they do not get in the way when applying paint to the rising portions 51 of the side surfaces. Alternatively, the left and right sides of the scattering prevention cover 5 may be configured to be detachable.

Next, an embodiment of a coating method using the coating device 1 will be described based on each component of the coating device 1 described above and also with reference to FIGS. 11 to 17. In FIGS. 11 to 17, the configuration of the coating device 1 is partially omitted in order to make the operation of the oscillating head 30 easier to see. In addition, in the explanation of the coating method, the oscillating head is designated as (30) (the same applies to the drawings).

The coating method of the present embodiment is carried out using the coating device 1 equipped with the oscillating head 30 shown in FIGS. 4 to 9 without the head actuator 40, and includes a first horizontal coating step, a vertical coating step, and a second horizontal coating step. In the first horizontal coating process, as shown in FIG. This is a process where it is applied by spraying it onto the floor. This figure shows a state in which the oscillating head 30 is moving toward the left operating end 25a.

Next, the vertical coating process will be explained. As shown in FIG. 12, the oscillating head 30 reaches the operating end 25a of the left-right reciprocating mechanism 20. Then, as shown in FIG. 13, the swinging head 30 swings outward due to the inertia that has been moving so far. Then, paint is applied to the rising portion 51.

Next, as a second horizontal coating process, before the vertical coating process shown in FIG. 13 ends, an operation of moving the slider section 23 to the opposite operating end 25b is started. Then, as shown in FIG. 14, the oscillating head 30 is gradually returned to the neutral position by acceleration of the slider portion 23, and the road surface 50 or floor surface is coated. At this time, the slider section 23 may be moved toward the operating end 25b on the opposite side of the slide rail 22 immediately after the first horizontal coating process is finished, or the movement of the slider section 23 may be temporarily stopped. It may be moved while the swinging head 30 is swinging outward. Alternatively, the slider portion 23 may be moved toward the opposite operating end 25b at the moment when the swinging head 30 swings to the outermost side. This is because if the slider section 23 is moved toward the opposite operating end 25b while the swing head 30 is about to return to the neutral position after swinging outward, the acceleration of the slider section 23 will cause the head to swing. This is to prevent the swinging head 30 from swinging outward again (returning motion). In this way, in the coating method of this embodiment, the vertical coating step and part of the second horizontal coating step are performed simultaneously.

Subsequently, as the second horizontal coating step progresses, as shown in FIG. 15, the oscillating head 30 gradually returns to the neutral position and starts coating the road surface 50 or floor surface. When the second horizontal coating step further progresses, as shown in FIG. 16, the oscillating head 30 returns to the neutral position, and the road surface 50 or floor surface is coated in this state. Then, when the oscillating head 30 reaches the operating end 25b on the right side shown in the figure, the above-described vertical coating process and second horizontal coating process may be repeated. Note that the swinging motion of the swinging head 30 and the vertical coating process may be performed on both sides of the operating ends 25a, 25b of the left and right reciprocating mechanism 20, or only on one of the left and right sides. Further, the timing at which the oscillating head 30 returns to the neutral position may be at any time during the second horizontal coating process, for example, at the end of the second horizontal coating process.

In addition, as another embodiment, if the above return operation can be improved by using a spring or a damper (fluid cylinder) as shown in FIGS. 6 to 8, or by suppressing acceleration at the start of movement of the slider section 23. After the swinging head 30 swings outward, the slider portion 23 may be moved toward the opposite operating end 25b when the swinging head 30 is about to return to the neutral position. Alternatively, in the state shown in FIG. 13, wait until the swinging motion of the swinging head 30 ends with the slider section 23 stopped, and after the swinging head 30 returns to the state shown in FIG. 12, slide the slider section 23. It is also possible to move it towards the working end 25b on the opposite side of the rail 22.

In yet another embodiment, as shown in FIG. 17, the moving speed of the slider section 23 is reduced just before the slider section 23 reaches the left operating end 25a, and the inertia of the oscillating head 30 at that time causes The swinging motion can be performed even before the slider portion 23 reaches the operating end 25a. In this case, after the slider portion 23 reaches the operating end 25a, the operations shown in FIG. 13 and subsequent steps already described are performed.

By stopping or decelerating the slider portion 23 at the operating ends 25a and 25b in this manner, it is possible to adjust the film thickness of the rising portion 51. For example, depending on the situation at that time, if the slider portion 23 is immediately folded back at the operating ends 25a and 25b, the film thickness at the rising portion 51 and its vicinity becomes thinner. On the other hand, by increasing the stopping time at the operating ends 25a and 25b or by increasing the degree of deceleration, the film thickness at the rising portion 51 and its vicinity becomes thicker. Note that the return speed of the oscillating head 30 can be adjusted by adjusting the acceleration of the slider section 23 at the beginning of the second horizontal coating step shown in FIGS. 13 to 14, and the film thickness at the rising portion 51 and its vicinity can be adjusted. It is possible to do so.

Next, an embodiment of a coating method using the oscillating head 30e shown in FIG. 10, which is equipped with the head actuator 40, will be described. The coating method of this embodiment basically performs the same operation as the coating method described above, but the swinging motion is not performed by the inertia of the swinging head 30 due to the movement of the slider section 23, but by using the head actuator 40. done by. Thereby, the swinging motion of the swinging head 30e does not depend on the speed of the slider section 23, and the overall moving speed of the slider section 23 can be increased or decreased. Furthermore, the timing for starting the second horizontal coating process can also be freely determined regardless of the position of the oscillating head 30e. Also, when the embodiment shown in FIG. 17 is used, there is no need to decelerate the slider section 23 before the operating end 25a. With these, it becomes possible to more finely adjust the film thickness of the coating area including the rising portion 51 and its vicinity.

As described above, according to the coating device 1 of this embodiment, it is possible to simultaneously coat the rising portion 51 of the side surface in addition to the road surface 50 or floor surface, although the coating device 1 has a simple configuration. In particular, in a configuration in which the swinging heads 30a, 30b, 30c, and 30d are oscillated by their inertia, the head actuator 40 is unnecessary, and the structure can be made even simpler. Even in such a case, the angle regulating section 32, spring 35, damper 36, fluid cylinder 60, speed adjustment mechanism 70, and weight 38 stabilize the swinging motion and make it possible to move at a desired angle and speed. Further, the swinging head can be maintained at the neutral position by the temporary holding part (magnet) 139.

On the other hand, in the configuration including the head actuator 40, there is no need to rely on the inertia of the swinging head 30e for the swinging motion, so the speed of the swinging motion, the degree of deceleration near the operating ends 25a and 25b of the slider section 23, and the The stopping time and turn-back timing can be set and adjusted more precisely at arbitrary speeds and timings, making it easier to control the film thickness.

Further, according to the coating method of this embodiment, a second horizontal coating step is performed in which the slider portion 23 is folded back and moved in the middle of the vertical coating step. Therefore, when the oscillating head 30 returns to the neutral position, the slider portion 23 has already moved. This prevents the swinging head 30 from momentarily stopping when it returns to the neutral position, thereby preventing uneven film thickness.

Furthermore, in the embodiment in which the swinging head 30 is oscillated before the slider section 23 reaches the operating ends 25a, 25b, even when the slider section 23 reaches the operating ends 25a, 25b, the moment when the oscillating head 30 is This prevents permanent stoppage and further prevents uneven film thickness.

Note that the above-described coating apparatus and coating method are merely examples of the present invention, and the configuration thereof can be changed as appropriate without departing from the spirit of the invention. For example, instead of the speed adjustment mechanism 70 with exposed piping as in this embodiment, a fluid cylinder with a built-in speed adjustment mechanism may be used.

1. Application device, 2. Hose, 3. Spray gun, 4. Control unit, 5. Scattering prevention cover,
10...Dolly, 11...Front wheel, 12...Rear wheel, 13...Motor, 14...Handle, 15...Hose support part,
20... Left and right reciprocating mechanism, 21... Drive section, 22... Slide rail, 23... Slider section, 24, 24f, 24g... Slide base, 25a, 25b... Operating end,
30, 30a, 30b, 30c, 30d, 30e, 30f, 30g... Swing head, 31... Rotating shaft, 32, 132... Angle regulating part, 33... Stopping plate, 34... Regulation bolt, 35 ...Spring, 36.. Damper (rotary damper), 37.. Hanging rod, 38.. Weight, 139.. Magnet (temporary holding part),
40...Head actuator, 41...Belt, 42...Pulley, 43...Output shaft,
50... Road surface (floor surface), 51... Rising part,
60... Fluid cylinder, 61... Cylinder part, 62... Piston rod, 63, 64, 65, 66... Pin member,
70... Speed adjustment mechanism, 71... Extension side piping, 72... Extension side regulating valve, 73... Contraction side piping, 74... Contraction side regulating valve, 75, 76... Outlet, 77, 78... inlet,

Claims (12)

A coating device that applies paint to a road or floor surface with a spray gun,
A cart equipped with wheels and capable of traveling,
a left-right reciprocating mechanism provided on the truck and including a slider part that is reciprocatable in the width direction of the truck;
a swinging head provided on the slider portion and capable of swinging further outward from the operating end of the left-right reciprocating mechanism;
a spray gun provided on the oscillating head;
A control unit that controls at least the operation of the left-right reciprocating mechanism,
A coating device characterized in that it is capable of coating not only road surfaces or floor surfaces but also rising portions of side surfaces. a rotation shaft that pivotally supports the swinging head above the center of gravity of the swinging head;
2. The coating device according to claim 1, wherein the swinging head swings due to its inertia when it reaches the operating end of the left-right reciprocating mechanism. The coating device according to claim 2, further comprising an angle regulating section that adjustably regulates the angle of the swinging motion of the swinging head. 3. The coating device according to claim 2, further comprising a spring attached to the slider portion and the oscillating head, and suppressing the oscillating head from performing an oscillating motion at a location other than an operating end of the left-right reciprocating mechanism. 3. The coating device according to claim 2, further comprising a damper attached to the slider portion and the oscillating head, and suppressing the oscillating head from performing an oscillating motion at a location other than an operating end of the left-right reciprocating mechanism. the damper is a fluid cylinder;
6. The coating device according to claim 5, wherein one end of the fluid cylinder is rotatably supported by the slider section, and the other end is rotatably supported by the swinging head. the damper is a fluid cylinder;
The fluid cylinder is provided with its axis vertically on a vertical line passing through the rotation axis, one end of the fluid cylinder is rotatably supported by the slider part, and the other end is rotatably supported by the slider part. The coating device according to claim 5, wherein the coating device is rotatably supported by the swinging head. comprising a speed adjustment mechanism that adjusts the expansion and contraction speed of the piston rod of the fluid cylinder,
The speed adjustment mechanism is
an outflow port and an inflow port provided on the proximal end side and the distal end side of the cylinder portion of the fluid cylinder, respectively;
an extension side piping that connects the outflow port on the distal end side and the inflow port on the proximal end side;
an extension side adjustment valve that adjusts the flow rate of the extension side piping;
a contraction-side piping that connects the base end side outflow port and the distal side inflow port;
The coating device according to claim 7, further comprising a contraction side adjustment valve that adjusts the flow rate of the contraction side piping. A weight is provided on the swinging head at a predetermined distance downward from the swinging shaft, and the swinging motion of the swinging head is controlled by the distance between the swinging shaft and the weight and/or the weight of the weight. The coating device according to claim 2, wherein the return speed is adjusted. The coating device according to claim 2, further comprising a temporary holding portion that holds the swinging head with a force weaker than the inertial force when the swinging head reaches the operating end of the left-right reciprocating mechanism when the swinging head is in the neutral position. a rotation shaft that pivotally supports the oscillating head;
a head actuator for swinging the swinging head;
2. The coating device according to claim 1, wherein when the slider section reaches an operating end, the head actuator is operated to swing the swinging head. A coating method performed using the coating device according to any one of claims 2 to 10,
While running the trolley,
a first horizontal application step of spraying and applying paint from the spray gun onto a road surface or floor surface while the slider portion moves toward an operating end;
a vertical coating step in which the oscillating head oscillates outward to apply the rising portion when the slider portion reaches the operating end;
a second horizontal coating step of starting an operation of moving the slider part to the opposite operating end before the end of the vertical coating step, and coating the road or floor surface while gradually returning the oscillating head to a neutral position; , including;
A coating method characterized in that the vertical coating step and the second horizontal coating step are repeated.

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