JPH0365238B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a spray device equipped with a nozzle for spraying a coating material, and a moving means for moving the spray device along a wall surface. Concerning a spray machine that sprays onto walls.

Note that the term coating material includes all spray finishing materials such as cement ricin and acrylic ricin, fireproof coating materials such as rock wool, and various paints.

[Conventional technology]

As the above-mentioned spraying machine, for example, a device that sprays a coating material onto the side of a ship, the outer wall of an oil tank, etc. is known. This device is equipped with a spray nozzle that is movable horizontally and vertically and is controlled so that the spray distance to the wall is automatically constant and the spray nozzle is perpendicular to the wall. established,
It is designed to ensure good paint spraying at all times (see, for example, Japanese Patent Application Laid-Open No. 132572/1983).

[Problem that the invention seeks to solve]

However, in the conventional structure described above, the wall surface to which spraying is applied consists only of large surfaces such as the side of a ship or the outer wall of an oil tank. Therefore, when this spraying machine is applied to the outer wall of a building where there is a mixture of walls, which are sprayed surfaces, and openings, which are non-sprayed surfaces, it is necessary to cover the openings such as windows with sheets or paper in advance. So-called curing work is required. Therefore, in buildings with a large number of openings, etc., curing work can be extremely time-consuming.
This reduced work efficiency and required a lot of manpower.

In view of the above-mentioned circumstances, an object of the present invention is to enable spraying work to be performed efficiently and with less manpower even when there are a large number of openings and the like.

[Means for solving problems]

The characteristic configuration of the spraying machine according to the present invention is that a spraying range regulating member is provided that blocks the spraying path from the nozzle that sprays the coating material in a posture along the wall surface to be sprayed, and the spraying range regulating member is attached to the wall surface. The present invention is characterized in that a spraying range changing means is provided for moving the spraying range into and out of the spraying path along the spraying path.

[Effect]

In other words, by limiting the spraying range so that the coating material does not reach the hoods and openings of the ventilation fan on the wall using the spraying range regulating member, it is no longer necessary to spray the hoods and openings mentioned above in advance. Spraying work can be carried out continuously without having to perform curing or other work on areas that are not covered.

Further, since the spray range changing means moves the spray range regulating member toward and away from the spray path from the nozzle along the wall surface, it is possible to arbitrarily change the amount of protrusion of the spray range regulator with respect to the spray route. Therefore, the spray range on the wall surface can be changed continuously without moving the spray device itself.

〔Effect of the invention〕

As a result, the curing work that conventionally required a great deal of manpower and time can be omitted, and the spraying work can now be carried out efficiently and cost-effectively.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 2, a wall painting machine is an example of a spraying machine that sprays paint as a coating material onto a wall surface W of a building from a cart 1, a guide mast 2, a spraying device 3 according to the present invention, etc. It consists of X.

The trolley 1 has an upper frame 1a and a lower frame 1.
The lower frame 1b is composed of
It has a pair of driving wheels 5 driven by a traveling motor 4 and an idler wheel (not shown). Further, a travel path detection sensor 6 made of a reflective photo sensor is attached to the lower part of the lower frame 1b.

On the ground G facing this running path detection sensor 6, a running guide tape 7 is affixed in advance almost parallel to the wall surface W of the building, which is the surface to be sprayed. Then, based on the detection information from the traveling path detection sensor 6, the control device 8 is configured to maintain a constant positional relationship between the traveling guide tape 7 and the traveling path detection sensor 6 when the trolley 1 moves. Therefore, the driving of the traveling motor 4 is controlled. Thereby, the cart 1 can move substantially parallel to the wall surface W.

A guide mast 2 is erected on the upper frame 1a of the truck 1, and a control device 8, various winding devices 9 to 12, etc., which will be described later, are fixedly installed. Further, a level gauge 13 is provided on the upper frame 1a. Then, the control device 8 controls the horizontal adjustment motor 14 based on the signal from the level meter 13.
to drive the lower frame 1 of the upper frame 1a.
The structure is such that the upper frame 1a can always be maintained in a substantially horizontal position by changing the mounting position relative to the upper frame 1a.

The guide mast 2 is attached to be swingable around an axis _P1 . A male threaded member 17 is pivotally attached to the lower end of the rod 16 that is pivoted to the bracket 15 near the upper end of the guide mast 2, and a female threaded member (not shown) is screwed into the male threaded member 17.
is fixed to the rotating shaft of a mast inclination adjustment motor 18 provided on the upper frame 1a of the truck 1.

That is, by rotating this motor 18, the male screw member 17 moves up and down, and the guide mast 2
The angle of inclination can be changed. Further, an inclinometer 19 is attached to the guide mast 2, and the control device 8 controls the above-mentioned mast inclination adjustment motor 18 based on a signal from the inclinometer 19.
By controlling the drive of the guide mast 2, the guide mast 2 can be maintained in a substantially vertical position at all times.

Further, the spray device 3 is suspended and supported by a wire 21 wound around a pair of pulleys 20 attached to the upper end of the guide mast 2 .
This wire 21 is wound around a wire winding device 9 provided on the upper frame 1a of the truck 1. Also,
A guide ring 22 attached to the spray device 3 engages with a flange portion of the guide mast 2.

That is, by driving the motor 9a for the wire winding device 9, the spraying device 3 can be moved up and down along the guide mast 2.

That is, the spraying device 3 is suspended and supported from a guide mast 2 erected on the trolley 1, and the spraying device 3 can be moved up and down along the wall surface W by driving the wire winding device 9. 3 in the horizontal direction along the wall surface W serves as a moving means MM for moving the spray device 30, which will be described later, provided in the spray device 3 along the wall surface W.

In addition to the plurality of spray nozzles N, the spraying device 3 is equipped with a plurality of ultrasonic sensors 23 for detecting distances to the wall surface W and the ground surface G, a television camera 24 for monitoring, and the like. There is. Then, signal transmission between each of the ultrasonic sensors 23 and the control device 8, and the television camera 24 and the monitor television 25.
coaxial cable 26 for signal transmission between
is wound around a cable winding device 10 provided on the upper frame 1a of the truck 1.

Further, an air hose 27 that supplies compressed air from the compressor 2 to the blowing device 3 is wound around an air hose winding device 11 provided on the upper frame 1a of the truck 1.

The drive motors 9a to 11a for the winding devices 9 to 11 described above are configured so that their driving is controlled by control signals output from the control device 8, respectively.

The spraying device 3 includes a hanging frame 28, a casing 29,
It also includes a spray device 30 having a plurality of spray nozzles N, and the like.

A pulley 31 is pivotally supported on the hanging frame 28, and the above-described suspension wire 21 is wound around the pulley 31, so that the entire spraying device 3 is suspended and supported. A paint tank 32 is provided in the upper part of the casing 29, and a paint hose 33 for supplying paint to each nozzle N is installed from the paint tank 32 to the sprayer 30.

In the spray device 30, as shown in FIGS. 3 and 4, a plurality of spray nozzles N are installed in two rows, upper and lower, in a staggered arrangement when viewed from the front. A paint hose 33 is connected to each spray nozzle N, and an air tube 34 that distributes and supplies compressed air from the air hose 27 is also connected.

In addition, as shown in FIGS. 1, 3, and 4, the spray device 30 has a plurality of spray nozzles N to prevent the paint from scattering on surfaces other than the wall surface W, which is the surface to be sprayed. A cover 35 is provided to prevent this. A pair of upper and lower shielding plates 36 and a pair of left and right shielding screens 37 are provided in the opening facing the wall surface W of the cover 35 .

The upper and lower pair of shielding plates 36 each have a spray nozzle,
The cover 35 is attached so as to be swingable between a lying position where it retreats from the injection path caused by N and follows the upper and lower surfaces of the cover 35, and an upright position where it is located within the injection path and blocks a part of the injection path. A pinion gear 38 connected to the mounting shaft 36a of the pair of shielding plates 36 meshes with a rack 40 connected to the piston rod 39a of each cylinder 39, and the operation of the cylinders 39 causes the above-mentioned The posture of the shielding plate 36 is changed.

That is, as shown in FIG. 5, for example, when the spray device 30 moves up and down along the wall surface W and sprays around the opening 0 in the wall surface W, either the upper or lower shielding plate 36 is raised. By changing the posture, the coating material can be sprayed only on the parts other than the opening 0.

Further, a pair of left and right shielding screens 37, which are spraying range regulating members according to the present invention, are stretched across a pair of rods 41 and 42, respectively. Rod 41 to which the tip side of the shielding screen 37 is fixed
A rubber blade 43 is attached to the side facing the wall surface W, and a pair of upper and lower block members 44 and 45 are attached in series.

One of the pair of block members 44, 45 (lower for the right shielding screen 37 in FIG. 1, upper for the left shielding screen 37) is formed with a female screw. Female screws are screwed into male screw members 46 and 47 installed on the left and right sides at the upper and lower ends of the cover 35, respectively. Further, the other block member 45 is formed with a hole having an inner diameter slightly larger than the outer diameter of the male screw members 46, 47, and the male screw members 46, 47 are fitted into the hole. Further, separate motors 48 and 49 are interlocked with the pair of upper and lower male screw members 46 and 47, respectively.

On the other hand, the rods 42 to which the proximal ends of the pair of left and right shielding screens 37 are fixed are both pivotally supported by the cover 35, and motors 50, 51 are attached to one end of the rods 42, respectively.
are linked together.

The pair of left and right shielding screens 37 are operated by driving separate motors 48 and 49.
It is configured to move in the left and right directions along the wall surface W to be sprayed by the screw feeding action of the male screw members 46 and 47 that rotate in conjunction with the motors 48 and 49 and the block member 44 that is screwed thereto. It has been done. That is, the above configuration is the spraying range changing means.
It is AC.

As shown in FIG. 6, for example, when the spray device 30 moves up and down along the wall surface W, if there is an opening 0 etc. in the injection path, either the left or right shield is removed. By appropriately pulling out the screen 37, the coating material can be sprayed only onto the portion other than the opening 0.

As a result, the spray path from the spray nozzle N can be limited to an arbitrary range, and curing work is not performed on the wall surface W where there are many parts that do not require spraying, such as openings and ventilation fan hoods. This means that spraying work can be carried out without any problem.

Note that the motors 50 and 51 are connected to the shielding screen 3.
7 is driven in conjunction with motors 48 and 49 in order to wind it up into a roll when retracting it from the injection path.

Control of the injection path by the above-mentioned shielding plate 36 and shielding screen 37 may be performed manually by the operator of the wall painting machine Automatically based on the wall painting machine
A microcomputer may be installed in the microcomputer, and the dimensions of the wall surface W and the locations where spraying is required may be stored in advance as coordinate data, and the spraying may be performed automatically based on the data.

Further, in the previous embodiment, the vertical spray path of the spray device 30 was blocked using the undulating shield plate 36, but instead of this, the method described in the previous embodiment was used. A spray range regulating member such as a shielding screen 37 may be provided.

As the spray range regulating member, instead of a curtain-like member that is wound up into a roll shape while being evacuated from the injection path, like the shielding screen 37 described in the previous embodiment, a plate member that simply slides along the wall surface W may be used. It may be.

In addition, the shielding screen 3 explained in the previous embodiment
The structure is similar to 7, but the proximal rod 42 holds a rolled polyethylene film, etc., and one end of this polyethylene film is locked to the distal rod 41 to control the injection path. When shutting off, the rod 41 on the tip side is moved without rotating, and as it moves, the polyethylene film is pulled out. When retiring from the injection path, the rod 41 on the tip side is moved while rotating, and as it rotates, the polyethylene film is pulled out. Then, the used polyethylene film is wound around this rod 41, and when all the rolled polyethylene film of the proximal rod 42 is wound around the distal rod 41, a new rolled polyethylene film is rolled up. The polyethylene film may be replaced with a new one so that the injection path can always be blocked with a new polyethylene film.

Furthermore, in the previous embodiment, the explanation was given by taking as an example the wall surface coating machine X that sprays paint as a coating material onto the wall surface W of a building. The present invention is applicable to spraying equipment that targets not only paints but also base treatment materials such as sealers, spray finishing materials such as acrylic ricin and cement ricin, and sprayed fireproof coating materials such as rock wool. It is possible to do so. Further, the spraying method may be an airless spray method in addition to the air spray method described in the previous embodiment.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the spraying device according to the present invention, FIG. 1 is a perspective view of the spraying device, FIG. 2 is an overall side view of the wall painting device, FIG. 3 is a sectional view of the spraying device, and FIG. 4 is a cross-sectional view of the spraying device. FIG. 3 is a cross-sectional view taken along the - line in FIG. 3, FIG. 5 is a vertical cross-sectional view showing the spraying state, and FIG. 6 is a horizontal cross-sectional view showing the spraying state. 30... Spray device, 37... Spray range regulating member,
N...nozzle, W...wall, MM...movement means,
AC...Means for changing spray range.

Claims (1)

[Claims] 1. Sprayer 30 equipped with a nozzle N that sprays coating material
and a moving means MM for moving the spray device 30 along the wall surface W, and a spray range regulating member 37 that blocks the injection path from the nozzle N in an attitude along the wall surface W. spraying range changing means for moving the spraying range regulating member 37 into and out of the spraying path along the wall surface W;
A spray machine equipped with AC. 2. The spraying machine according to claim 1, wherein the spraying range regulating member 37 is a curtain-like member that is wound up into a roll when it is retracted from the spraying path. 3. The spraying machine according to claim 1, wherein the direction in which the spraying range regulating member 37 is moved by the spraying range changing means AC is the left-right direction of the wall surface W.