JP3157499B2 - Multicolored pattern spraying device, multicolored pattern spraying method, multicolored pattern sprayed product production apparatus, and multicolored pattern sprayed material production method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for spraying a multicolored pattern, a method for spraying a multicolored pattern, an apparatus for producing a sprayed article with a multicolored pattern, and a method for producing a sprayed article with a multicolored pattern.

[0002]

2. Description of the Related Art Conventionally, such multicolor pattern spraying has been performed manually by using a spray gun or the like. In this case, if the amount of the paint of each color changes slightly, the distribution / ratio of each color of the pattern changes, and the pattern itself changes. The spraying of the paint is performed on the front surface or the back surface of a product such as a FRP (composite reinforced plastic) such as a bathtub, a unit bath, a septic tank, a boat, a gun tool, furniture, and a vehicle.

[0003]

When the blowing amount of each color is slightly changed, it is impossible to produce a coated product having the same pattern. Modern mass production requires that products with the same pattern be made. SUMMARY OF THE INVENTION An object of the present invention is to provide a pattern formed by spraying with paints of different colors, in which the color distribution is constant and uniform, thereby creating a pattern having the same color distribution.

[0004]

In order to achieve the above object, the present invention provides a method of spraying a paint and forming a multicolored pattern on a plurality of sprayed objects to keep a supply amount of the paint per unit time constant. By keeping them, the ratio of each color in the formed multicolor pattern is kept almost the same for a plurality of sprayed objects. Thereby, the color distribution of the patterns formed by spraying the paints of different colors is kept constant and uniform, and the patterns having the same color distribution can be created.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 shows an apparatus for spraying a multicolor pattern, an apparatus for performing a method for spraying a multicolor pattern, an apparatus for producing a sprayed article for a multicolor pattern, and an apparatus for executing a method for producing a sprayed article for a multicolor pattern. The spraying of the paint onto the sprayed object 80 is performed on the front surface or the back surface of a product such as a bathtub, a unit bath, a septic tank, a boat, a cancer tool, furniture, a vehicle, or other FRP (composite reinforced plastic). The object to be sprayed 80 is made of, for example, a transparent acrylic resin, and a marble pattern is sprayed from the back surface of the transparent resin.

The spraying robot 4 is fixed on a base 5 and includes a first arm 1, a second arm 2, and a third arm 3. Joints 6, 6, 6 are provided between the base 5 and the arms 1, 2, and 3.
Can be bent with respect to each other. A spray gun 7 is attached to the tip of the third arm 3. The spray gun 7 supplies three types of paints 9, 10, and 11 and sprays them on the object 80. Thereby, the multicolor pattern shown in FIG. 2 is formed on the surface of the sprayed object 80.

The joints 6, 6, 6 and the base 5 are provided with a stepping motor (pulse motor) (not shown). The direction and the angle of each of the arms 1, 2, and 3 change, and the spray gun 7 moves and is sprayed along the spray surface of the object 80. The drive of the step motor and the control of the rotation angle are executed by the computer 12. The computer 12 stores a spraying program,
The spraying according to the shape of the object to be sprayed 80 is automatically performed according to this program. This stepper motor may be another type of motor as long as it can be digitally controlled by a computer.

On the electronic balances 20, 21, and 22, pressure feeding tanks 24, 25, and 26 containing the three-color paints 9, 10, and 11 having different viscosities are installed and stored. These pressure feed tanks 25, 26 and 27 are driven by a compressor. These pressure feed tanks 25, 26 and 27
To the spray gun 7 from the hoses 27, 28 and 29
Is provided. These hoses 27, 28 and 29
The arms 1, 2 and 3 are engaged with hanging guides (not shown) provided on the arms. The electronic balances 20, 21
The weight data of each of the paints 9, 10, and 11 measured at the steps 22 and 23 are constantly sent to the computer 12.

Further, from the electronic balances 20, 21 and 22, a stable signal AS or an unstable signal US is output from the computer 1.
2 is output. This unstable signal US is obtained by
The weight of what is on 21 and 22 fluctuates,
If the weight data measured by the fluctuation fluctuates by a predetermined value or more, the weight data is output. The stability signal AS is
If the fluctuation of the weight of the objects on the electronic balances 20, 21 and 22 subsides and the weight data measured by the fluctuation does not fluctuate and does not fluctuate beyond a predetermined value, it is output instead of the unstable signal US. You.

[0010] Such a stable signal AS and an unstable signal US
Is switched by the microcomputers in the electronic balances 20, 21 and 22. In this process, the maximum value and the minimum value of the past weight data are determined, the difference between the maximum value and the minimum value is determined for each unit time, and if the difference is equal to or more than a predetermined value, the unstable signal US is generated. Output, and if less than a predetermined value, a stable signal AS is output.

If this unstable signal US is output,
The storage amount of each of the paints 9, 10 and 11 is reduced, and the supply of each of the paints 9, 10 and 11 is performed normally. Therefore, this unstable signal US is transmitted to the computer 1
2, the storage amount of the multicolor pattern 11 has changed. Therefore, the detection of the change in the storage amount of each of the paints 9, 10 and 11 is executed by the unstable signal US.

If the stability signal AS is given to the computer 12 for a predetermined time or more, each of the paints 9, 10 and 1
This means that the storage amount of No. 1 has not changed. Therefore,
The detection of the change in the storage amount of each of the paints 9, 10 and 11 is also executed by the stability signal AS.

In the course of the hoses 27, 28 and 29 through which the paints 9, 10 and 11 flow, metering pumps 30 and 31 are provided.
And 32 are provided, and the paints 9, 10 and 11 are pumped up and sent to the spray gun 7 to be supplied. In the metering pumps 30, 31, and 32, the supply amounts of the paints 9, 10, and 11 per unit time are always constant. However, when the number of revolutions changes, the supply amount per unit time also changes accordingly.

Rotation start (on), rotation stop (off), rotation speed (rotation speed) of these metering pumps 30, 31 and 32
The driving of the computer 12 is controlled by the computer 12. When the rotation of the metering pumps 30, 31, and 32 is stopped, the supply of the paints 9, 10, and 11 to the spray gun 7 is also stopped.

Line heaters 33, 34 and 35 are provided in the middle of the hoses 27, 28 and 29 in front of the metering pumps 30, 31 and 32. In the line heaters 33, 34 and 35, the pipes are complicatedly bent in multiple layers, and the paints 9, 10
And 11 flow, and a heater is provided around the tube so that the paints 9, 10 and 11 are constantly heated to the set temperature while passing through the tube.

Therefore, the line heaters 33, 3
From 4 and 35, the paints 9, 10 and 11 are always supplied at a set constant temperature. The line heaters 33, 34 and 35 are provided with temperature setting knobs so that the set temperatures can be changed.
This temperature is typically between 10 and 40 degrees.

Each of the paints 9, 10 and 11 has a viscosity of 0.1
Poise to 50 poise, or 25 to 35 poise. When the Poise value is small, the viscosity is low and the state is smooth, and when the Poise value is large, the viscosity is high and the gel state is thick. This paint 9, 10 and 1
The viscosity of 1 changes depending on the temperature of the paints 9, 10 and 11. Viscosity is also called viscosity, and is expressed in units of poise.

If the viscosities of the paints 9, 10 and 11 change, the size of each pattern of each color changes even if the distribution of each color is the same. For example, in the case of the spot pattern of each color shown in FIG. 2, when the viscosity is increased, the size of the spot of one color is increased. Conversely, when the viscosity decreases, the size of the spot of one color decreases.

As described above, each line heater 33, 3
According to 4 and 35, if the temperature of each of the paints 9, 10 and 11 is kept constant, the viscosity of each of the paints 9, 10 and 11 is also kept constant, and random colors formed by spraying with paints of different colors Are uniform and uniform in size. Therefore, the size of the particles of the paints 9, 10 and 11 of each color when blown out from the spray gun 7 becomes constant and uniform, and not only the distribution of each color but also each one of the colors.
The sizes of the two patterns can also be kept substantially constant and uniform, and the pattern to be formed can be kept constant and uniform over the plurality of objects to be sprayed 80.

Supplying such paints 9, 10 and 11 while keeping them at a constant temperature is necessary for supplying high-viscosity paints, especially paints having a viscosity of 20 poise or more, in a constant amount of paint per unit time. It is particularly effective, and there is almost no variation in supply amount and little pulsation.

The line heaters 33, 34 and 3
The set temperature of 5 can also be controlled by the computer 12. Further, when the temperature of each of the paints 9, 10 and 11 must be lowered below room temperature, a cooling device is used instead of the line heaters 33, 34 and 35.

Further, the pressure feed tanks 24, 25 and 26
The temperature of each of the paints 9, 10, and 11 is measured by a thermometer, and according to the measured temperature,
Each of the paints 9, 10 and 11 in 4, 25 and 26 may be heated or radiated or cooled or cooled. In this case as well, heaters or cooling devices are provided in the pressure feeding tanks 24, 25 and 26.

As a result, the temperature of each of the paints 9, 10 and 11 is kept constant, and the viscosity of each of the paints 9, 10 and 11 is also kept constant. Of the paint 9, 9
The size of each random color pattern formed by spraying 0 and 11 is constant and uniform.

At the place where the object to be sprayed 80 is blown, an air supply type hot air heater 70 and an air intake device 71 (exhaust device, ventilation fan) are provided. The warm air heater 70 is provided with a temperature sensor, and the warm air is blown or the blow of the warm air is stopped so as to always keep the room temperature alone. The room temperature of the place where the object to be sprayed 80 is blown is kept constant by the warm air blown out from the warm air heater 70.

As a result, the temperature of the object to be sprayed 80 is also kept constant, and even when the paints 9, 10 and 11 are sprayed on the object to be sprayed 80, the paints 9, 10 and 11 are kept constant. Kept at temperature. This allows
The viscosities of the paints 9, 10 and 11 are kept constant, the supply amounts of the paints 9, 10 and 11 per unit time are also kept constant, and the color of the pattern formed by spraying the paints of different colors The distribution or the size of the pattern of each color is also constant and uniform.

The curing agent 40 is stored in a pressure feeding tank 41. This pressure feed tank 41 is driven by a compressor. A hose 42 is provided from the pressure feeding tank 41 to the spray gun 7. The hose 42 is also locked by a suspension guide (not shown) provided on the arms 1, 2, and 3. An electromagnetic valve 43 is provided in the middle of the hose 42 at the end of the pressure feed tank 41, and the supply of the curing agent 40 is stopped or allowed. The drive of these solenoid valves 43 is controlled by the computer 12.

Sensors 44, 45, 46 and 47 are provided in the hose 42 and the hoses 27, 28 and 29 through which the paints 9, 10 and 11 flow. The sensors 44, 45, 46 and 47 detect the presence of the coating materials 9, 10 and 11 and the curing agent 40 in the supply paths of the coating materials 9, 10 and 11 and the curing agent 40. The detection data of the sensors 44, 45, 46 and 47 is sent to the computer 12 at all times.

The sensors 44, 45, 46 and 47 are a flow sensor, a flow sensor, an optical sensor (phototube), an infrared sensor, a photocoupler, an acceleration sensor, an optical electric field sensor, an optical voltage sensor, a magnetic sensor, a magnetoresistive element, and a hall. An element or the like is used. The curing agent 40 is a liquid and is mixed with the paints 9, 10 and 11 to cure the same, and is made of, for example, methyl ethyl ketone peroxide dimethyl phthalate.

The paints 9, 10 and 11 and the curing agent 40
Is mixed in the air after being blown out from the spray gun 7, reacts and hardens when sprayed on the surface of the object 80, and fixes the multicolor pattern 11 on the surface of the object 80. The paints 9, 10 and 11 are made of resin, or are automatically cured by thermal curing or thermoplasticity after a lapse of time after being sprayed, so that the multicolor pattern 11 is fixed on the surface of the sprayed object 80. It may be the one that causes it.

2. FIG. 2 shows an example of a multicolor pattern. Paints 9, 10 and 1 above
One color is, for example, grayish black, gray, grayish white. By making the amount of each of the paints 9, 10 and 11 blow out per unit time constant and uniform, FIG.
The distribution ratios of all the colors of the pattern shown in FIG.

This pattern is a random spot pattern. This mottled pattern is like a granite or marble. What is intended to be achieved by the present invention is to make the distribution ratio of each color constant and uniform, and not to realize a pattern completely identical to this pattern.

When the paints 9, 10 and 11 are sprayed on the object 80, before the colors are completely mixed, the paints 9, 10 and 11 are sprayed with the curing agent 40 while keeping the colors. And the pattern is fixed. In addition, such paints 9, 10 and 11 are 2
Only the colors may be supplied, or four or more colors may be supplied. Further, each of the paints 9, 10 and 11 may not be originally mixed with each other.

The fixed pattern of each color distribution is kept the same over the entire surface of one sprayed object 80.
However, in some cases, it may change. For example,
The design of the handrail portion of the bathtub, the design of the side wall, and the design of the bottom surface may be different from each other. In this case, in the coating of each part, the respective rotation speeds of the metering pumps 30, 31, and 32 are switched, and the blowout amounts of the respective paints 9, 10, and 11 per unit time are also switched.

However, in a plurality of objects to be sprayed 80...
The rotation speeds of 0, 31, and 32 are kept the same, the blowout amounts per unit time of 9, 10, and 11 of each paint are also kept the same, and the patterns formed are also kept the same.

3. Metering Pumps 30, 31, and 32 FIG. 3 shows the metering pumps 30, 31, and 32. In the metering pumps 30, 31, and 32, the supply amounts of the paints 9, 10, and 11 per unit time are always constant. However, when the number of revolutions changes, the supply amount per unit time also changes accordingly. The computer 12 drives and controls the rotation of the metering pumps 30, 31, and 32 (on), the rotation stop (off), and the switching of the rotation speed (number of rotations).

A screw 74 is rotated in a cylinder 60 of each of the metering pumps 30, 31 and 32 by a servomotor connected by a shaft 75. The rotation speed of the screw 74 is always constant, so that the paints 9, 10 and 11
Is always constant. Of course, if the rotation speed (the number of rotations) is switched as described above, the supply amounts of the paints 9, 10 and 11 are also switched, and the switched supply amount is always constant. In this way, the color distribution of the pattern formed by spraying the paints of different colors is kept constant and uniform, and a pattern having the same color distribution can be created.

The metering pumps 30, 31, and 32 may be of a gear type instead of a screw type. However, in the gear type, a slight pulsation occurs in the supply amount of the paints 9, 10 and 11, and there may be a case where the color distribution of the formed pattern slightly varies. In the case of a pattern in which such a slight variation does not matter, a gear type may be used. Such a pulsation hardly occurs in the screw type.

The screw type metering pumps 30, 31, and 32 are provided with high-viscosity paints,
This is particularly effective when the paint is supplied at a constant rate per unit time with a paint of poise or more, and there is almost no variation in supply amount and little pulsation.

Incidentally, as such a constant supply means of the paint, any constant supply means may be used as long as a constant amount can be supplied per unit time. Also, it is very difficult for a compressor to always keep the supply amount of paint per unit time constant.

4. Computer 12 FIG. 4 shows a circuit of the computer 12. Part of this computer 12 and processing (flowchart) described later
May be provided in the spraying robot 4 in some cases. The detection data generated from the sensors 44, 45, 46 and 47 is converted into digital data by the sensor circuit 50, and is taken in by the CPU 52 via the input interface 51. Electronic balance 2
The digital weight data from 0, 21, and 22 is converted by the decoder 55, and is further taken in by the CPU 52 via the input interface 51.

A blowing check program according to the flowcharts of FIGS.
The above-mentioned spray program and system program are stored, and other various control data and numerical data are stored. The RAM 54 stores the captured detection data and weight data, flag data of the stability signal AS, various intermediate processing data, various instruction data input from the input unit 56, instruction commands, and the like. As the weight data and the flag data of the stability signal AS, all data detected for each interrupt process described later are sequentially stored. The input unit 56 includes a keyboard, a touch panel, a mouse, a scanner, and the like.

The solenoid valve 43 and the spray robot 4
Are driven by a valve driver 60 and motor drivers 58,... The valve driver 60 and the motor drivers 58,..., Control the opening and closing of the solenoid valve 43 in accordance with control data given from the CPU 52 through the output interface 59.
Start (on), stop (off) rotation of the above motor,
Control such as a rotation speed (number of rotations) and a rotation direction is performed.

The ROM 53 and the RAM 54 (internal storage medium / means) are a hard disk, a flash memory,
A storage device such as a PROM is also possible. This ROM 53
In the RAM 54, a computer program stored in an information storage unit 57 (external storage medium / means) such as an optical disk, a magneto-optical disk, or a magnetic disk is copied and stored (installed / transferred). Also RO
Programs transmitted from external / internal computers are also stored in the M53 and the RAM 54 (install /
Will be transferred). The storage medium of the program includes a communication medium.

This installation (transfer / copy) is automatically executed when the information storage unit 57 is set in the musical sound generating apparatus or when the power of the computer 12 is turned on, or by an operation by the operator. Installed. The above program is the above program for the CPU 52 to perform various processes.

The computer 12 has another operating system, system program (OS),
Other programs may be stored, and the above programs may be executed together with the OS and other programs. This program only needs to be able to execute the processes and functions described in the claims together with another program or alone when installed and executed in the present apparatus (computer body).

A part or all of this program is stored and executed in one or more other devices other than the present device, and
Data to be processed / already processed data / program may be transmitted / received between the present apparatus and another apparatus via communication means, and the present invention may be executed as the whole of the present apparatus and another apparatus.

From the timing generator 61, a timing control signal for synchronizing all the circuits of the above device is output to each circuit. The timing control signal includes a clock signal of each cycle, a signal obtained by ANDing or ORing these clock signals, a signal having a cycle of the channel division time of the time division processing, channel number data, and the like.

5. Spray Check Process (FIG. 5) FIG. 5 is a flowchart of the spray check process executed by the CPU 52. This process is executed as an interrupt process at regular intervals, for example, every 0.5 seconds, based on the clock signal. This process is executed only when the spraying program is executed and the motor of the spraying robot 4 is driven, but may be executed at any other time.

In this process, first, the sensors 44, 45, 46 and 47 for the paints 9, 10 and 11 and the fixing agent 40 are used.
The detection data DT from is read, written and stored in the RAM 54 (step 01). This detection data DT
If there is no paint 9, 10 or 11 or the fixing agent 40 (step 02), an error process (step 03) is executed.

In this error processing, the solenoid valve 43 is closed, and the motor of the joint 6 of the spraying robot 4 is stopped. Further, an alarm buzzer (not shown) is sounded, an alarm lamp (not shown) is flashed, or an automatic call is made to the mobile phone of the person in charge.

As a result, if the paints 9, 10 and 11 and the fixing agent 40 do not exist in the supply path (step 02), the production of the sprayed object 80 is immediately stopped.
In this way, it is possible to prevent the sprayed object 80 to which any of the paints 9, 10, 11 and the fixing agent 40 is not sprayed from being produced (manufactured).

When the detection data DT indicates that the paint 9, 10 or 11 or the binder 40 is not used, the paint 9,
This corresponds to a case where there is no storage amount of 10 or 11 or the fixing agent 40 at all, or a case where air is mixed in the middle of these even though there are these remaining amounts.

Next, each of the above electronic balances 20, 21 and 22
The weight data WT (n) is taken in, written and stored in the RAM 54 (steps 04 and 05). Further, if the previous weight data WT (n-1) is stored in the RAM 54 (step 06), the previous weight data WT (n-1) in the RAM 54 is read (step 07). The value of the current weight data WT (n) taken in step 04 is the same as the previous weight data WT (n).
If the value is not smaller than the value of -1), that is, if the remaining amount of the paint 9, 10 or 11 or the fixing agent 40 has not changed (decreased) (step 08), the above error processing is executed (step 08). Step 03).

Thus, although the paint 9, 10 or 11 or the fixing agent 40 is detected (step 02), the coating 9, 10 or 11 or the fixing agent 4
If the amount of 0 has not decreased (step 08), the paint 9,
It is considered that the spraying of 10 or 11 or the fixing agent 40 itself has stopped for some reason. Therefore, similarly, it is possible to prevent the sprayed object 80 to which the paint 9, 10, or 11 or the fixing agent 40 is not sprayed from being produced (manufactured).

When the paint 9, 10 or 11 or the adhesive 40 is not reduced, the paint 9, 10 or 11 or the adhesive 9,
This corresponds to a case where the coating material 10, 11, or the fixing agent 40 cannot be fed because the coating material 10, 11, or the fixing agent 40 is clogged.

The process for detecting the paint 9, 10, or 11 or the fixing agent 40 in the steps 01 and 02 may be performed after the detection of the weight of the coating 9, 10, or 11 or the fixing agent 40 in steps 04 to 08. This allows
Even if the weight of the paint 9, 10 or 11 or the adhesive 40 is reduced, the paint 9, 10 or 11 or the adhesive 4
If 0 does not exist in the middle of the supply path,
Production of 0 is stopped immediately.

If it is determined in step 02 that the detection data DT contains the paint 9, 10, or 11 or the adhesive 40, the process returns. Further, if the previous weight data WT (n-1) is not stored in step 06, the process is returned as it is.
This case corresponds to the start of the spraying process.

Although not shown, an initialization process is executed each time the spraying on one sprayed object 80 is completed. In this process, the weight data WT stored in the RAM 54 is cleared. Further, other data is cleared, and various initialization processes are executed.

6. Blowing Check Processing (FIG. 6) FIG. 6 shows a flowchart of another embodiment of the blowing check processing executed by the CPU 52. Steps 01 to 03 are exactly the same as steps 01 to 03 in FIG. The processing of steps 04 to 08 in FIG. 5 is replaced by the following processing. First, it is determined whether the signal from the electronic balances 20, 21 and 22 is the stable signal AS or the unstable signal US (step 11). Unstable signal US
If is supplied, the process returns as it is.

On the other hand, if the stability signal AS is supplied (step 11), this flag data is written into the RAM 54, and it is determined whether or not the flag data has been written in the previous interrupt processing (step 12). If it has been written the previous time, it means that the stable signal AS has continued for a predetermined time or more, and the paint 9, 10 or 11
Alternatively, the storage amount of the fixing agent 40 has not changed. Therefore, in this case, the error processing in step 03 is executed.

If the stable signal AS continues for a predetermined time or more, the paint 9, 10 or 11 or the fixing agent 40
As a result, the supply of the paint 9, 10 or 11 or the fixing agent 40 is stopped due to clogging or the like, and the sprayed object 80 to which the paint 9, 10 or 11 or the fixing agent 40 is not sprayed is produced in the same manner as above. Manufacturing) can be prevented.

In the process of step 12, it is determined whether or not the flag data of the stable signal AS is stored for the previous two times, and further before and twice before, in addition to the flag data of the previous stable signal AS. Is also good. This makes it possible to change the detection duration of the stable signal AS when performing error processing. Thus, the detection of the change in the storage amount of the paint 9, 10 or 11 or the fixing agent 40 is performed by:
The same can be achieved by detecting the duration of the stable signal AS or detecting the unstable signal US. Thus, paint 9,
The detection of the change in the storage amount such as 10 or 11 or the fixing agent 40 may be in any form.

The present invention is not limited to the above embodiment, but can be variously modified without departing from the spirit of the present invention. For example, the previous weight data WT in step 08 in FIG.
In the comparison between (n-1) and the current weight data WT (n), the weight data WT (n-2) may be further compared with the weight data WT (n-2) two times before, and the amounts of these changes may be compared.

The pattern formed by implementing the present invention is as follows:
In addition to mottled patterns, non-geometric random stripes, non-geometric random polka dots, non-geometric random checkers, etc. There may be. The spraying of the multicolor pattern spraying device, the multicolor pattern spraying method, the multicolor pattern spraying product production method and the multicolor pattern spraying material production method of the present invention uses spraying, painting, coating, and electrostatic field. Anything, such as a thing using a brush or a roller, may be used. The claims at the time of filing the present application are as follows. [A] means for storing a plurality of liquid paints having different viscosities having different colors; and supplying the stored plurality of paints separately and sequentially, spraying the plurality of paints on the object to be sprayed, and multi-coloring the surface of the object to be sprayed. A means for forming a pattern of the paint, a means for repeating the spraying of the paint and the formation of the multicolor pattern for a plurality of objects to be sprayed, and a constant supply of the paint per unit time, whereby the Means for making the ratio of each color in the color pattern substantially the same for a plurality of objects to be sprayed. [B] a plurality of stored high-viscosity liquid paints having different colors are sequentially supplied separately and sprayed on the object to be sprayed to form a multicolored pattern on the surface of the object to be sprayed;
The paint spraying and the formation of the multicolor pattern are repeated for a plurality of objects to be sprayed, and by keeping the supply amount of the paint per unit time constant, the ratio of each color in the formed multicolor pattern is increased. However, a method for spraying a multicolored pattern is characterized in that a plurality of sprayed objects are made substantially the same. [C] means for storing a plurality of liquid paints having different viscosities having different colors; and supplying the stored plurality of paints separately and sequentially, spraying the sprayed material onto the object to be sprayed, and applying multicolor to the surface of the object to be sprayed. A means for forming a pattern of the paint, a means for repeating the spraying of the paint and the formation of the multicolor pattern for a plurality of objects to be sprayed, and a constant supply of the paint per unit time, whereby the Means for making the ratio of each color in the color pattern substantially the same for a plurality of objects to be sprayed. [D] a plurality of liquid paints having different viscosities and having different viscosities stored therein are sequentially supplied separately and sprayed on the object to be sprayed to form a multicolored pattern on the surface of the object to be sprayed;
The paint spraying and the formation of the multicolor pattern are repeated for a plurality of objects to be sprayed, and by keeping the supply amount of the paint per unit time constant, the ratio of each color in the formed multicolor pattern is increased. However, a method for producing a multi-color pattern spray is characterized in that a plurality of sprayed objects are made substantially the same. [E] The temperature of each of the plurality of paints is measured, and the temperature of each paint is kept constant by heating, radiating, cooling, or cooling the paint according to the measured temperature. The viscosity of the paint is kept constant, so that the supply amount of each paint per unit time is kept constant, and the color distribution of random patterns formed by each paint or the size of each random pattern is constant and uniform. Or, by the heat retaining means provided in the supply path of each of the paints, each of the paints is kept at a constant temperature, whereby the viscosity of each of the paints is kept constant, so that the supply of each of the paints per unit time is performed. Keeping the amount constant, the color distribution of random patterns formed by spraying with different paint colors or the size of the random patterns of each color becomes constant and uniform, At the place where the object to be sprayed is sprayed, a heat retaining means is provided, whereby the temperature of the object to be sprayed is kept constant, and when each of the paints is sprayed on the object to be sprayed, The paint is kept at a constant temperature, whereby the viscosity of each paint is kept constant, so that the supply amount of each paint per unit time is kept constant, and the color of the pattern formed by spraying the paints of different colors The distribution or the size of the pattern of each color becomes constant and uniform, the viscosity of the plurality of paints is 0.1 poise to 50 poise, and the presence or absence of the paint in the supply path of the paint is detected. Detecting the change in the stored amount of the paint, stopping the supply of the paint to the object to be sprayed on the basis of the two detection results, and performing the notification after the supply of the paint is stopped. Blowing device multicolored pattern of claim A wherein the.

[0065]

As described in detail above, the present invention provides a method for spraying a paint and forming a multicolored pattern on a plurality of sprayed objects by keeping the supply amount of the paint per unit time constant. The ratio occupied by each color in the formed multicolor pattern is kept substantially the same for a plurality of objects to be sprayed. Therefore, the color distribution of the pattern formed by spraying the paints of different colors is kept constant and uniform, and the effect that the pattern with the same color distribution can be created can be achieved.

[Brief description of the drawings]

FIG. 1 shows an apparatus for spraying a multicolor pattern, an apparatus for performing a method for spraying a multicolor pattern, an apparatus for producing a sprayed article with a multicolor pattern, and an apparatus for executing a method for producing a sprayed article with a multicolor pattern.

FIG. 2 shows an example of a multicolor pattern formed by spraying.

FIG. 3 shows a cross section of metering pumps 30, 31, and 32.

FIG. 4 shows a circuit of the computer 12.

FIG. 5 shows a flowchart of a spraying check process executed by a CPU 52;

6 shows another flowchart of the spraying check process executed by the CPU 52. FIG.

[Explanation of symbols]

1, 2, 3 ... arm, 4 ... spraying robot, 5 ... base, 6 ... joint, 7 ... spray gun, 9, 10, 11 ...
Paint, 12 ... computer, 20, 21, 22 ... electronic scale, 24, 25, 26, 41 ... pressure feed tank, 27,2
8, 29, 42 ... hose, 30, 31, 32 ... metering pump, 33, 34, 35 ... line heater, 40 ... hardener, 43 ... solenoid valve, 44, 45, 46, 47 ... sensor,
50: sensor circuit, 51: input interface, 52
... CPU, 53 ... ROM, 54RAM, 55 ... decoder, 56 ... input unit, 57 ... information storage unit, 58 ... motor driver, 59 ... output interface, 60 ... valve driver, 61 ... timing generation unit, 70 ... air supply type Hot air heater, 71 ... intake device (exhaust device, ventilation fan), 74
... screws, 75 ... shafts, 80 ... objects to be sprayed.

Claims (5)

(57) [Claims] 1. A plurality of high-viscosity liquid paints of different colors.
Means for storing a plurality of paints whose viscosity changes depending on temperature; means for mixing and spraying the stored plurality of paints on a sprayed body to form a multicolor pattern on the surface of the sprayed body If, the respective coating by keeping a formation of the coating spray and polychromatic patterns, means for repeating for a plurality of the spraying member, the temperature of the plurality of paint constant
With keeping the viscosity of the charge constant, coercive Chi constant supply amount per the unit time of each paint, more thereto, the magnitude and ratio of each color in each color pattern in the pattern of multi-color which is the form spraying apparatus of a multicolor pattern, characterized in that a Ru to <br/> means approximately the same per a plurality of the spraying body. 2. A plurality of liquid paints having different viscosities and having different viscosities , wherein the viscosities vary with temperature.
The paint is mixed and sprayed on the object to be sprayed, and a multicolor pattern is formed on the surface of the object to be sprayed. The spraying of the paint and the formation of the multicolor pattern are repeated for a plurality of objects to be sprayed . By keeping the temperature of the paint constant,
With keeping the viscosity of the charge constant, coercive Chi constant supply amount per the unit time of each paint, more thereto, the magnitude and ratio of each color in each color pattern in the pattern of multi-color which is the form the method spraying multicolor pattern, characterized in that the <br/> to substantially the same for each plurality of the spraying body. 3. High-viscosity liquid paints of different colors.
Means for storing a plurality of paints whose viscosity changes depending on temperature; means for mixing and spraying the stored plurality of paints on a sprayed body to form a multicolor pattern on the surface of the sprayed body If, the respective coating by keeping a formation of the coating spray and polychromatic patterns, means for repeating for a plurality of the spraying member, the temperature of the plurality of paint constant
With keeping the viscosity of the charge constant, coercive Chi constant supply amount per the unit time of each paint, more thereto, the magnitude and ratio of each color in each color pattern in the pattern of multi-color which is the form Means for producing substantially the same for a plurality of objects to be sprayed. 4. A plurality of liquid paints having different viscosities and different viscosities , wherein the viscosities vary with temperature.
The paint is mixed and sprayed on the object to be sprayed, and a multicolor pattern is formed on the surface of the object to be sprayed. The spraying of the paint and the formation of the multicolor pattern are repeated for a plurality of objects to be sprayed . By keeping the temperature of the paint constant,
With keeping the viscosity of the charge constant, coercive Chi constant supply amount per the unit time of each paint, more thereto, the magnitude and ratio of each color in each color pattern in the pattern of multi-color which is the form the method of producing spray of multicolor patterns, characterized in that the <br/> to substantially the same for each plurality of the spraying body. 5. The temperature of each of the plurality of paints is measured, and the temperature of each of the paints is kept constant by heating, radiating, cooling, or cooling the paints according to the measured temperature. The viscosity of each paint is kept constant, and thus the supply amount of each paint per unit time is kept constant, and the color distribution of random patterns formed by each paint or the size of each random pattern is constant. And uniform, or by the heat retaining means provided in the supply path of each paint, each paint is kept at a constant temperature, thereby keeping the viscosity of each paint constant, and thus per unit time of each paint Keeping the supply amount constant, the color distribution of random patterns formed by spraying with different colors of paint or the size of random patterns of each color becomes constant and uniform, Furthermore, in the place where the spraying to the sprayed body is performed,
Heat retaining means is provided, whereby the temperature of the object to be sprayed is kept constant, and also when each of the paints is sprayed on the object to be sprayed, the paints are kept at a constant temperature, whereby Keep the viscosity of the paint constant, and thus keep the supply rate of each paint above per unit time constant,
The color distribution of the pattern formed by spraying the different paints or the size of the pattern of each color becomes constant and uniform. The viscosity of the plurality of paints is 0.1 poise to 50 poise. Detecting the presence or absence of the paint in the route, further detecting a change in the storage amount of the paint,
2. The multicolor pattern spraying apparatus according to claim 1, wherein the supply of the paint to the object to be sprayed is stopped based on both of the detection results, and the notification is performed after the supply of the paint is stopped.