WO2005079996A1 - 回転霧化頭型塗装装置 - Google Patents
回転霧化頭型塗装装置 Download PDFInfo
- Publication number
- WO2005079996A1 WO2005079996A1 PCT/JP2005/002359 JP2005002359W WO2005079996A1 WO 2005079996 A1 WO2005079996 A1 WO 2005079996A1 JP 2005002359 W JP2005002359 W JP 2005002359W WO 2005079996 A1 WO2005079996 A1 WO 2005079996A1
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- WIPO (PCT)
- Prior art keywords
- paint
- rotational speed
- target
- steady
- change
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
- B05B5/0415—Driving means; Parts thereof, e.g. turbine, shaft, bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
- B05B5/0422—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces comprising means for controlling speed of rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/08—Plant for applying liquids or other fluent materials to objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/149—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet characterised by colour change manifolds or valves therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
- B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
Definitions
- the present invention relates to a rotary atomizing head type coating apparatus suitable for use in coating a substrate such as a car body of an automobile.
- a rotation number detector for detecting the number of writing, an energy source for supplying a drive energy to the air motor, and an electro-pneumatic converter for adjusting the X-a pressure supplied from the air source according to the electric power , And the power to be output to the electro-pneumatic converter based on the detected rotational speed and the target rotational speed.
- control device is used to adjust the power output to the electro-pneumatic converter so as to reduce the difference in rotational speed between the detected rotational speed and the target rotational speed. , Fahrenheit control of feed motor was performed.
- the motor is driven within a range of ⁇ 5% relative to the target rotation speed of about 0 rpm, and the paint is supplied to the rotary atomizing head in a state where the rotary atomizing head is rotated at high speed.
- the paint supplied to the rotary atomizing head is rotary atomized (centrifugal atomization) to form paint particles, and the paint particles are charged through the rotary atomizing head, an external electrode, etc.
- an air motor not an electric motor, is used as a drive source of the rotary atomizing head.
- the reasons for this are: (1) It is possible to easily ensure the insulation of the motor that is the high voltage application part because the driving source is compressed air with high insulation, and (2) it is small because the structure is relatively simple The cost is low, maintenance and repair costs are low, and (3) Volatile flammable organic solvents and paints have no risk of ignition even if they enter the interior of the motor. It is an advantage
- the air motor has a relatively small torque, for example, when switching the supply and stop of the paint, the load applied to the rotary atomizing head (motor) changes and the speed of the feed motor fluctuates. If the rotational speed of the rotary atomizing head is high, the particle size of the paint particles is small ⁇ If the rotational speed is low, the particle size of the paint particles is large. The particle size of the paint particles greatly affects the finish of the coating. While the rotation speed of the rotary atomizing head changes with the switching between supply and stop of the paint, while it is necessary to keep the constant, the particle size of the paint particles is changed during this switching operation. There is a problem in that the quality of the vehicle is impaired because it is not set to the desired value.
- the paint I ⁇ Is one body according to the shape of the body. Supply of paint several tens of times, stop It is repeated. Also, depending on the requirements from the coating industry, there is a tendency to use a paint with a high specific gravity, high viscosity, non-volatile content, and with a high discharge rate.
- the fluctuation range of the number of revolutions due to the supply of paint, stop, etc. becomes large, and the time deviated from the eye number of revolutions is long (For example, about 7 to 10 seconds).
- the number of revolutions may change several tens of times per vehicle body, so the variation in the particle size of the paint particles accompanying the number of revolutions has a very large effect on the painted product.
- the present invention has been made in view of the problems of the prior art described above, and it is an object of the present invention to rapidly reduce the number of revolutions of an air motor even when various conditions such as supply and stop of paint are switched.
- the goal is to provide a rotary atomizing head type coating device that can be set to improve the paint quality.
- the present invention provides a rotary atomizing head for spraying supplied paint, an air motor connected to the rotary atomizing head and rotated by the supply of air, A rotation number detector for detecting the number of rotations of the X-motor; an air source for supplying air to the air-motor; and an air source supplied from the air source.
- An electro-pneumatic converter that adjusts the X-a pressure according to the amount of electricity, and the detected rotational speed by the rotational speed detector described above, and the detected rotational speed of is preset with Application to a rotary atomizing head type coating apparatus comprising a control unit that controls the electric pressure output to the electro-pneumatic converter so as to reduce the rotation speed difference with the target rotation speed and feedback-controls the air pressure. Be done.
- the feature of the configuration adopted by the present invention is that, when the target position and the discharge amount of the paint are input, the control position is controlled in the state where the paint of the discharge amount is supplied.
- the steady-state value calculation unit is used to calculate the steady-state value of the amount of electric energy necessary for stable rotational driving near the large target rotation speed.
- the pd control device has the target rotation speed and the discharge amount of the paint. When at least one has been changed The new steady-state value is calculated using the steady-state value calculation means based on the post-change macro-mark rotation speed and the discharge amount of the paint, and the electric quantity based on the calculated new steady-state value is It is apt to be configured to output to conversion.
- the feed motor can be rotationally driven in the vicinity of the target rotation speed to rapidly converge to the steady state.
- paint particles having a desired particle diameter can be sprayed onto the substrate to improve the coating quality.
- the steady-state value computing means computes the steady-state value of the electric quantity based on the viscosity coefficient of the paint and the specific gravity of the paint in addition to the number of revolutions and the discharge amount of the paint. It may be
- the air motor can be rotationally driven in a steady state at high speed
- the target rotation speed after the change when the target rotation speed after the change is higher than the target rotation speed after the change, the target rotation speed after the change of the rotation speed of the recording medium is changed. Higher than the number
- the air pressure applied to the air motor can be increased or decreased in a steady manner in accordance with the increase or decrease of the rotation speed of the air motor. This is more than necessary It is possible to quickly reach the target number of revolutions while suppressing the occurrence of an overshoot that the number of revolutions increases or decreases above the target number of revolutions. Can be reduced.
- control device performs feed-pack control based on the difference in the number of revolutions after the detected number of revolutions reaches the target number of revolutions.
- the amount of electricity that is increased or decreased from the steady-state value is output to the electro-pneumatic conversion to rapidly reach the target rotational speed.
- feedback control based on the speed difference can be performed to keep the speed of the air motor near the target speed.
- the control device when interrupting the supply of the paint, sets the target rotation speed having the same value as the target rotation speed of the paint supply to be restarted thereafter. Good.
- the motor can be driven to rotate in advance at the number of revolutions required to resume the supply of paint in the next process. It is possible to reduce the fluctuation of the rotational speed when reopened and reduce the time lag associated with the switching of the coating conditions,
- the controller when the controller coats a wide coating area, if the discharge amount of the paint is increased, the target rotational speed is increased to ih and the narrow coating area is coated. Alternatively, the discharge amount of the paint may be reduced and the rotational speed may be reduced.
- the rotation speed of the rotary atomizing head can be
- the paint spray pattern can be painted in a large size by raising it.
- the paint spray pattern is increased or decreased according to the increase or decrease of the target rotation speed while the paint spray pattern is increased or decreased according to the size of the paint area.
- the particle size of the paint particles can be kept almost constant regardless of the size of the paint, and the finish quality of the paint can be made constant to improve the paint quality.
- FIG. 1 is a block diagram showing the overall configuration of a rotary atomizing head type coating apparatus according to a first embodiment of the present invention
- Fig. 2 is a longitudinal sectional view showing the coating machine in Fig. 1.
- FIG. 3 is an explanatory view showing a rotary selection processing table according to the first embodiment.
- Fig. 4 is a flow chart showing the rotational speed control process of the air motor by the rotary controller in Fig. 1.
- Figure 5 is a time chart showing the time change of the target rotation speed and the discharge amount of paint.
- Fig. 6 is a characteristic diagram showing the time change of target rotation speed, detected rotation speed and so on.
- FIG. 7 is a configuration diagram showing an entire configuration of a rotary atomizing head type coating apparatus according to a second embodiment of the present invention.
- FIG. 8 is an explanatory diagram of a first rotation / evening selection processing table according to the second embodiment.
- FIG. 9 is an explanatory view showing a second rotation / evening selection processing table according to the second embodiment.
- FIG. 10 is a perspective view showing a rotary atomizing head type coating apparatus according to a third embodiment of the present invention.
- Fig. 1 1 is a plan view showing the movement locus of the coating machine when painting the left half of the upper surface of the vehicle body.
- FIGS. 1 to 6 show a first embodiment of the present invention.
- 1 is a coating machine for spraying paint toward a substrate (not shown) at ground potential.
- the machine 1 is composed of a cover 12, an air motor 3, and a rotary atomizing head 4, which will be described later.
- a cylindrical cover 2 is provided to cover the motor 3 and the high voltage generator 9 and the like.
- the cover 2 has a motor housing space 2 A for housing the air motor 3 on its inner peripheral side.
- Reference numeral 3 is a temperature sensor housed in the motor housing space 2A of the force bar 2.
- the air motor 3 is a motoro, a hood 3A, and a static pressure bearing in the motor housing 3A.
- a hollow rotary shaft 3 C rotatably supported via 3 B and an air turbine 3 D fixed to the base end side of the rotary shaft 3 C are constituted. Then, the air motor 3 supplies the air evening bin 3 D with air through the air supply passage 3 E, so that the rotary shaft 3 C and the rotary atomizing head 4 can be
- Reference numeral 4 denotes a rotary atomizing head attached to the rotary shaft 3C tip side of the air motor 3.
- the rotary atomizing head 4 is formed of, for example, a metal material or a conductive resin material.
- a plurality of air discharge holes 5A are drilled out toward the.
- the tip m side of the feed tube is the rotary shaft 3 C head valve, and the flow is installed at the end of the feed tube.
- the paint passage 6 A and the thinner passage 6 B are provided in the fiber tube 6, and these passages 6 A 6 B are provided via the gear pump to the paint supply source 7, so Source 7 is called color change (CCV), so it discharges paint of each color and thinner as a washing body.
- CCV color change
- it is a displacement pump with a constant discharge rate per one rotation of the gear pump 81, and it is possible to set the feed rate (discharge rate) of paint etc. to a desired value according to the number.
- Gear pump 8 supplies paint, thinner, etc., to the rotary atomizing head 4 through the nozzle 6.
- a high voltage generator 9 is provided with a plurality of capacitor diode diodes 9 at the proximal end of the cover 2.
- Reference numeral 10 denotes a rotation number detector for detecting the number of rotations of the memory 3.
- the rotation number detector 10 is, for example, an optical fiber formed by a fiber made of a glass material or a synthetic resin material.
- the photoelectric converter 1 0 B connected to the optical fiber packet 1 OA ⁇
- the portable packet 1 0 A has its proximal end a photoelectric converter 1
- the tip side extends to the vicinity of the air bottle 3D.
- the light beam is projected onto the air evening bin 3 D through the optical fiber packet 10 A, and the reflected light from the air evening bin 3 D is used according to the number of rotations of the air cabin 3. It outputs a signal.
- the energy source 1 1 is an energy source for supplying energy to the energy converter 3.
- the energy source 1 1 is an air motor through an electro-pneumatic converter 1 2 described later.
- FIG. 1 2 shows an electro-pneumatic converter that adjusts the air pressure supplied from the air source 1 1 according to the current input from the rotation roller 13 described later according to the current Hisamata converter 1 2 is connected to a rotary controller 13 described later, and has a current of an input current value i such that it has a rotational speed of 3 turns, a force of 3 turns, for example, about 420 mA. It is input.
- the air-pneumatic converter 1 2 sets the air pressure to be supplied to the ammo 3 according to the input current value i.
- the input to the electro-pneumatic converter 1 2 is reduced.
- a voltage resistor may be used.
- 1 3 is a rotary control roller that constitutes a control device together with the main control panel 16, and the rotary control unit 1 3 is a motor controller.
- the rotary controller 13 converts the digital signal output from the control unit 14 and the control unit 14 into an analog signal input current value i D ZA It consists of the converter 1 5.
- the control unit 14 has a storage unit 14 A, and the storage unit 14 A has a rotation data control table 17 shown in FIG. 3 and a rotation speed control shown in FIG. 4 as described later. Processing programs etc. are stored.
- control unit 14 is connected to the rotation speed detector 10 and the main control panel 16 and to the electro-pneumatic converter 1 2 via the DZA converter 1 5. And, based on the program stored in the storage unit 14 A, the rotation controller 13 is detected by the target rotation speed NO set by the main control panel 16 and the rotation speed detector 1 0 The detected rotational speed N 1 is compared, and the input current value i of the electro-pneumatic converter 12 is increased or decreased so that they match. Thus, the rotary controller 13 performs feedback control of the air pressure supplied to the air motor 3, that is, the number of rotations.
- the rotation controller 1 3 rotates
- the input current value i at which the air pressure is, for example, 10% higher than the steady-state value is of the data selection processing table 1 7 is output to the electropneumatic converter 1 2.
- the rotation controller 13 has air than the steady-state value is in the rotation data selection processing table 17. For example, the input current value i at which the pressure is reduced by 10% is output to the electropneumatic converter 1 2.
- the main control panel 1 6 corresponds to, for example, the shape of the object to be coated, etc.
- the target speed NO is increased or decreased.
- the main control panel 1 6 increases and decreases the discharge amount Q0 of the paint together with the increase and decrease of the target rotation speed NO.
- the ON / OFF timing of the paint is preset according to the shape of the object to be coated. And, the main control panel 1 6 interrupts the supply of paint
- Reference numeral 1 7 denotes a rotation data selection processing table as steady-state value computing means stored in the storage unit 14 A of the control unit 14. This rotation data selection processing table
- the discharge amount of the paint Q 0 from 1 0 0 to 1 0 0 0 cc / min If it is set to, within ⁇ 5% of the target speed NO
- the steady-state values i 00 to i mn are values (large values) in which the air pressure increases as the target rotational speed N 0 increases. Also, even if the target number of revolutions NO is the same value, the air pressure becomes a value (large value) as the discharge amount Q 0 of the paint increases. Then, when the target number of revolutions NO and the amount of discharge of paint Q 0 are input, the rotation date selection processing table 1 7 is a steady-state value according to the input target number of revolutions NO and the amount of discharge of paint Q0. Select is (calculated) Output.
- the rotary atomizing head type coating apparatus has the above-described configuration. Next, the rotational speed control process of the air conditioner 3 by the rotary scanner 13 will be described with reference to FIGS. The description will be made with reference to.
- step 1 in Fig. 4 includes main control 16.
- Target rotation speed ⁇ ⁇ 0 and discharge amount of paint Q 0 (generally) and 3 ⁇ 4 S7E.
- rotation speed detector 1 0 Read the detected rotational speed N 1 from.
- step 3 it is determined whether the target rotational speed NO and the discharge amount Q0 of the paint have been changed from the previous set values. Then, if “YES J” is determined in step 3, at least one of the target number of revolutions NO and the discharge amount of the paint Q 0 is changed, so the air pressure supplied to the air motor 3 is changed Go to step 4 to
- step 4 among the steady-state values i 00 i mn in the rotation data selection processing table 1 7 shown in FIG. 3 stored in the storage unit 14 A, the target rotation speed NO and the discharge amount Q0 of the paint are corresponded. Select the steady-state value is.
- step 4 the steady-state value is selected such that the motor 3 is rotationally driven in the steady state at the target rotational speed NO after change and the discharge amount Q of the paint.
- step 5 it is determined whether or not the post-change target rotational speed N 0 is the same as the value before the change.
- step 5 when it is judged “YES” in step 5, the target rotation speed N 0 is not long (only the discharge amount Q 0 of the paint has changed), and it proceeds to step 6 to input to the electropneumatic converter 1 2 Set the current value i to the steady-state value is, and shift to step 1.
- step 5 when it is judged as "NO” in step 5, it moves to Susuno 7 to judge whether the target rotational speed NO has increased from before the change. Then, when it is determined "YES J" in step 7, since the target rotational speed NO increases more than before the change, it is necessary to rapidly increase the rotational speed of the air motor 3. Therefore, from the steady state At the same time, the input current value i to the electropneumatic converter 12 is larger than the steady value is, so that the air pressure is increased and the rotational speed of the air motor 3 rises above the steady state. (For example, set a value increased by 10%) and repeat the processing from step 1 onwards, while when it is judged “NO” in step 7, the 100 ⁇ ⁇ rotation speed N 0 decreases compared with before the change. If you are
- step 9 the input current value i to the electropneumatic converter 1 2 is the steady value.
- a value smaller than is (for example, a value decreased by 10%), and repeat the process from step 1 on.
- step 3 when it is judged as "NO" in step 3, the target number of revolutions NO and the discharge amount Q0 of the paint are held at the previously changed value and the one-shot value. Therefore, in step 10, the target rotational speed NO and the discharge amount of paint Q 0 are changed last time, and then the detected rotational speed N 1 reaches the target rotational speed N 0. 9
- step 10 After the judgment in step 3 is "YES", the detected rotational speed N 1 has reached the value within the range of ⁇ 5% of the target rotational speed NO at least once. It is judged whether or not.
- step 10 when it is judged “NO” in step 10, the transient state in which the detected rotational speed N 1 has not reached the target rotational speed N 0 immediately after the target rotational speed N 0 and the discharge amount Q 0 of the paint are changed. Therefore, the input current value i (air pressure) to the electro-pneumatic converter 12 is maintained at the current state (the state set to the value based on the steady-state value is) and the processing from step 1 onward is repeated.
- the input current value i air pressure
- step 10 when it is determined “YES” in step 10, the detected rotational speed N 1 reaches the target rotational speed N 0 and the transient state is ended, so the process proceeds to step 1 1 and the target rotational speed NO The rotation speed difference ⁇ with the detected rotation speed N l is calculated.
- step 12 it is determined whether or not the absolute value of the rotational speed difference ⁇ N is within the range of 5% of the target rotational speed NO. Then, when it is judged “YES” in step 12, the detected rotational speed N 1 has a value close to the target rotational speed N 0, so the input current value i to the electropneumatic converter 1 2 (air pressure ) Maintains the current state and repeats the process from step 1 onwards.
- step 12 when it is judged as "NO" in step 12, since the detected rotational speed N1 is a value different from the target rotational speed NO, the process proceeds to step 1 3 and the input current value i of the electropneumatic converter 1 2 Based on the rotational speed difference ⁇ , the detected rotational speed N 1 is increased or decreased to approach the giant rotational speed N 0 to change (increase or decrease) the air pressure supplied to the air motor 3. Then, return to step 1 and repeat the subsequent processing.
- the rotary atomizing head type coating apparatus has the configuration as described above, and the operation will be described next. Do.
- the rotary atomizing head 4 is rotated at a low speed by the motor 3, and in this state, the paint is supplied to the rotary atomizing head 4 through the feed tube 6.
- the coating machine 1 finely atomizes and sprays the paint by m force when the rotary atomizing head 4 rotates, and supplies shaping air through the shaping air 5. Apply paint particles to the substrate while controlling the spray pattern.
- the main control panel 1 6 raises or lowers the target rotational speed NO to increase or decrease the spray pattern according to, for example, the shape of the object to be coated.
- the particle diameter of the paint particles is small when the rotation speed of the fer motor 3 is high, and the rotation speed of the air motor 3
- the particle size of the paint particles increases, and the particle size of the paint particles changes according to the target number of revolutions NO.
- the finish of the paint deteriorates and the paint quality decreases.
- the main control panel 1 6 increases or decreases the discharge amount Q 0 of the paint together with the rise and fall of the S target number of revolutions N 0.
- the main control panel 16 is also preset with the setting of the paint ON F O F (time to supply and stop the paint).
- the target rotation speed NO and the discharge amount Q 0 of the paint are set at the same timing as a pair, but the timing of the paint NOFF does not necessarily have the same sunset. It is not fixed.
- the target rotation speed NO which corresponds to the paint ON of the next evening is preset to the target rotation speed NO, and with the actual rotation speed (actual rotation speed) To reduce the difference It is
- the switching timing of each setting is set in advance in consideration of the passage of time so that the relative position between the coating site of the object to be transported and the coating machine 1 matches.
- the target rotation speed N0 and the discharge amount Q0 of the paint are changed from, for example, the a state to the b state in FIG. Specifically, the number of revolutions N O is reduced from 4 0 0 0 0 r p m to 2 0 0 0 0 r p m and the discharge amount of the paint Q 0 from 4 0 0 c c / m i n
- the rotation controller 13 selects (calculates) the steady-state value is based on the target rotation speed NO and the discharge amount Q of the paint after change from the rotation data selection processing table 17 shown in FIG.
- the input current value i which is smaller than the steady-state value is by, for example, 10%, is output to the electro-pneumatic converter 1 2.
- the source for the air motor 3 is 1
- the motor 3 can be driven to rotate around the target rotational speed NO quickly by feedback control thereafter.
- the reference rotation number N 0 and the discharge amount Q 0 of the paint are changed from, for example, the b state to the c state in FIG. Specifically, the target number of revolutions N 0 increases from 2 0 0 0 0 rpm to 3 0 0 0 0 rpm, and the discharge amount of the paint Q 0 becomes 1 5 0 cc / min.
- the target rotation speed NO in the c state is continued to the c state as the target rotation speed NO corresponding to the paint ON time at the next lighting (when the supply of the paint is resumed).
- ⁇ It is preset to a value in the d state (for example, 3 0 0 0 0 r p m)
- D La 1 3 is the rotation data selection processing table shown in Figure 4
- an air pressure corresponding to the input current value i is supplied to the air motor 3 from the air source 1 1, and the actual rotational speed N of the air motor 3 rises rapidly as shown by the solid line in FIG. And reach the changed target speed NO.
- the air pressure close to the steady state is supplied to the air motor 3, the air motor 3 can be rotationally driven at the target rotational speed NO quickly by feedback control thereafter.
- the actual rotation speed N 'of the air motor 3 does not follow sufficiently and the actual rotation speed N' is The decrease to the target speed N 0 may be delayed. Also, for example, when the 100 standard rotation speed N 0 rises (change from b state to c shape), the actual rotation speed N 'of the air turbine 3 rises far beyond the target rotation speed N 0 There is a risk of
- the load on the rotary atomizing head 4 is increased in the prior art when the discharge amount Q 0 of the paint is changed (for example, from c state to d state).
- the actual rotational speed N 'of the air motor 3 may fluctuate with respect to the target rotational speed NO.
- the rotary controller 1 3 is electro-electrically converted based on one hundred or the indicated rotational speed N O and the discharge amount Q 0 of the paint.
- the steady-state value is of the input current value i input to 2 2 and one of the target number of revolutions NO and the discharge amount Q 0 of the paint is changed
- the steady-state value is calculated from the rotation data selection processing table 1.7 based on the target number of revolutions NO after this change and the discharge amount Q of the coating material, and the new steady-state value is calculated. It is configured to output the input current value i based on it to the electro-pneumatic converter 1 2.
- the air motor 3 is rapidly driven to rotate in the vicinity of the target number of revolutions NO and converges to a steady state. It can be done.
- the 3 can increase or decrease the air pressure applied to the air motor 3 relative to the steady state ability according to the increase and decrease of the rotational speed of the air motor 3.
- the occurrence of an increase or decrease in the number of revolutions exceeding the target number of revolutions NO more than necessary is suppressed, and the speed is increased rapidly to the target number of revolutions N 0 It is possible to reduce the time lag in which the speed of the air motor 3 deviates from the target speed N 0 as the coating conditions are switched.
- the rotation controller 13 is configured to perform feedback control based on the rotation speed difference ⁇ .
- the rotation controller 1 3 outputs an input current value i that is increased or decreased from the steady-state value is to the electropneumatic converter 1 2 immediately after the target rotational speed NO is changed. Turn the speed of air motor 3 02359
- the rotation controller 1 3 performs feedback control based on the rotation speed difference N N and holds the rotation speed of the air motor 3 near the target rotation speed NO. can do.
- rotary controller 1 3 interrupts the supply of paint.
- the rotary roller 1-3 is used to pre-set the temperature of the motor with the number of rotations required to resume the supply of paint in the next step. It can be driven to rotate, reduces fluctuation of the rotation speed when the supply of paint is resumed,
- FIGS. 7 to 9 show a second embodiment according to the present invention.
- the feature of this embodiment is that, in addition to the target number of revolutions and the amount of discharge of the paint, the rotary table selection processing table is based on the viscosity coefficient of the paint and the specific gravity of the paint.
- the configuration is such that the steady-state value of the current value is calculated.
- the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the rotary controller 21 has the control unit 22 and the control unit 22 in substantially the same manner as the rotary control 13 according to the first embodiment.
- the digital signal output from 2 2 is converted to the input flow value i of the analog output signal. It is done.
- X control 2 2 is the main control
- a program for rotational speed control processing similar to that of the first embodiment is stored in the storage unit 2 2 A, as well as being connected to 16 and having a storage unit 2 2 A. 8 Rotation data selection processing tables 2 4 and 2 5 shown in Fig. 9 are stored.
- 2 4, 2 5 are the storage units 2 2 of the control unit 2 2
- the rotational speed selection processing table 2 4, 25 has a target rotational speed NO It is stored as the steady-state value i 0000 to i Omn, i 100 to i lmn of the input current value i determined by the amount of discharge of the paint and Q 0.
- steady-state values i 0000 to i Omn, i l00 to i lmn are set, for example, to set the target rotational speed NO to 5 0 0 0 0 to 1 0 0 0 0 0 rpm and the discharge amount of the paint Q 0 to 1 0
- the air motor 3 is held in a state (steady state) in which the air motor 3 is rotationally driven within the range of about ⁇ 5% with respect to the target rotation speed N 0. It is a value obtained by measuring the input current value i to the electro-pneumatic converter 12.
- the rotation data selection processing table 2 4 2 5 is, for example, in that the viscosity coefficient of the paint is 7? 0, 7? 1 (coefficient corresponding to the viscosity) and the specific gravity 00, 11 are considered. This is different from the rotation data selection processing table 1 7 according to the embodiment of the present invention.
- the rotational data selection processing table 24 is stored with a steady-state value i 000-i Omn force S when, for example, an A-color paint having a viscosity coefficient 770 and a specific gravity K 0 is supplied.
- the rotation data selection processing table 2 5 is, for example, the viscosity
- the steady-state values i 100 to i lmn when the B-color paint having the coefficient ⁇ ? 1 and the specific gravity / l are supplied are stored.
- the rotary controller 2 1 calculates the steady-state value is of the input current value i to be input to the electro-pneumatic converter 1 2 according to the change of the coating conditions, the target rotational speed NO and the discharge amount of paint Q 0 In addition to the viscosity coefficient of paint? ? Consider 0, 7? 1 and specific gravity / 0, / cl. As a result, even when the load applied to the rotary atomizing head 4 increases or decreases depending on the high or low viscosity coefficient of the paint and the large or small specific gravity, the optimum steady-state value is taken into consideration. It is possible to select from the rotation data selection processing tables 2 4 and 2 5.
- the rotation data selection processing tables 2 4 and 2 5 have viscosity coefficients r? 0, 7? 1 and specific gravity ⁇ in addition to the target rotation speed NO and the discharge amount Q0 of the paint. Based on (), 1 1, the steady-state value is of input current value i is calculated. Therefore, in the present embodiment, even if the load applied to the rotary atomizing head 4 changes according to the viscosity coefficient 7? 0, 7? 1 of the paint or the specific gravities? Can be rotationally driven in a steady state.
- the rotational data selection process allows selection of steady-state values is according to the viscosity coefficients ⁇ 0,? 7 1 and specific gravities 0 0, 1 1 of two colors (amber or amber).
- the tables 2 4 and 2 5 are provided, for example, a rotation data selection processing table may be provided which can select steady-state values corresponding to three or more types of viscosity coefficients and specific gravities. For example, even if the color of the paint is the same, the viscosity coefficient or specific gravity may change depending on the concentration of the solvent, but even in such a case, PT / JP2005 / 002359
- Fig. 10 and Fig. 11 show the third embodiment of the present invention, and the feature of this embodiment is that the controller discharges the discharge amount of paint when painting a wide coating area.
- the target rotation speed is increased at the same time as the supply amount is increased, and when painting a narrow coating area, the discharge amount of the paint is reduced and the target rotation speed is decreased.
- the same components as those in the first embodiment are indicated by the same reference numerals and the description thereof is omitted.
- 31 is a rotary atomizing head type coating device disposed in a coating booth, and the coating device 31 is a coating device 32 described later, a coating robot 34, a coating robot described later. It is roughly configured by machine 3 5.
- the conveyor device 3 2 is a conveyor device provided on the floor surface of the painting booth, and the conveyor device 3 2 is mounted on a support (not shown) with a car body 3 8 described later. It conveys at a predetermined speed in the direction of arrow A.
- Reference numerals 3 3 and 3 3 denote left and right tracking devices provided on the left and right sides of the conveyor device 32.
- the respective tracking devices 3 3 correspond to the vehicle body 3 of the coating machine 35 described later.
- the movable base 3 3 A is moved parallel to the conveyor device 3 2.
- 3 4 and 3 4 are left and right paint pots mounted on the movable base 3 3 A of the tracking device 3 3, and each paint robot 3 4 is rotatable on the movable base 3 3 A Attached to the tip of the horizontal arm 3 4 B, a vertically movable arm 3 4 A pivotally installed, a horizontal arm 3 4 B rotatably attached to the upper end side of the vertical arm 3 4 A, and To the wrist 3 4 C It is roughly configured.
- the sprayer 3 5 and 3 5 are left and right sprayers attached to the wrist 3 4 C of the paint pot 3 4.
- the sprayer 3 5 is substantially the same as the sprayer 1 according to the first embodiment.
- it has a rotary atomizing head 3 6 driven to rotate at a high speed on the tip side, and is connected to a control device 3 7 including a rotary controller and the like.
- the control device 3 7 increases the discharge amount Q 0 of the paint as well as the target when coating a wide coating area such as the central part of the bonnet 3 8 H according to the shape of the vehicle body 3 8 described later.
- the control device 3 7 is configured to switch the size of the spray pattern to two types, a small pattern and a large pattern.
- control device 3 7 is configured to switch the size of the spray pattern to two types, a small pattern and a large pattern.
- control device 3 7 is configured to switch the size of the spray pattern to two types, a small pattern and a large pattern.
- control device 3 7 is configured to switch the size of
- Rotation data selection processing table (not shown) substantially similar to rotation data selection processing table 1 7 according to the first embodiment
- the vehicle body 3 8 is the vehicle body of the vehicle to be coated, and the vehicle body 3 8 is mounted on the support of the transport device 3 2 and transported.
- the car body 3 8 as shown in Figure 1 1, the front left and right front
- Figure 1 1 shows the general movement of the coating machine 3 5 when painting the left half of the upper surface of the car body 3 8. That is, in FIG. 11, thin dotted lines, thick solid lines and X dotted lines drawn on the painted surface of the left upper surface of the vehicle body 3 8 show changes in the spray pattern according to the movement track of the coating machine 3 5 There is.
- the thin dotted line on the left half of the upper surface of the car body 3 8 indicates the movement locus of the coating machine 35 when painting is performed with a small pattern.
- This thin dotted line is a bonnet 3 8 H, Rule 3 8
- the coating machine 3 5 reduces the target rotation speed NO and reduces the amount of discharge of the paint Q 0, and sprays the paint with a small pattern along the fine dotted line.
- the coating machine 35 raises the target rotational speed NO to the mouth for painting the center side of the left half of the hood 3 8 H, the roof 3 8 J, and the rear cover 3 8 K. Increase the paint discharge amount Q 0 and spray the paint with a large pattern along the thick solid line.
- the painting method of the right half of the car body 3 8 mentioned the upper surface The method is the same as the painting method for the left half of the part and the points that are left and right symmetrical, so the description shall be omitted.
- the discharge amount Q 0 of the coating material is increased and the target rotation speed is also increased. Raise NO and paint in a large pattern.
- the paint discharge amount Q 0 is decreased and the number of revolutions N 0 is decreased to paint in a small pattern.
- the controller 3 7 when painting a wide painting area, the controller 3 7 increases the discharge amount Q 0 of the paint and raises the target rotational speed NO, and when painting a narrow painting area, When the discharge amount of paint Q 0 is decreased
- the spray pattern can be made wider or narrower depending on the shape of the vehicle body 8 at the place where the vehicle body 3 8 of the automobile having a complex painted surface is painted, and is discarded by overspray.
- the amount of paint used can be reduced, as it is possible to achieve high quality coating with less paint.
- the paint spray pattern 9 is also, depending on the size of the painted area. Also, depending on the size of the painted area, the paint spray pattern 9
- the particle diameter of the paint particles is almost fixed regardless of the size of the paint spray pattern.
- the coating finish can be kept constant to improve the painting quality.
- a rotation table processing table is used to calculate the steady-state value is based on the target number of revolutions NO and the discharge amount Q of the paint, as in the first embodiment.
- the target number of revolutions N is the same as in the second embodiment.
- a rotary data selection processing table may be used that calculates a steady-state value in consideration of the viscosity coefficient and specific gravity of the paint.
- the direct charge type rotary atomizing head type coating apparatus for charging the paint to a high voltage directly via the rotary atomizing head 4 has been described by way of example.
- an external electrode is provided on the outer peripheral side of the force beam of the rotary atomizing head type coating apparatus, and this external electrode indirectly charges the paint sprayed from the rotary atomizing head to a high voltage. You may use it for the indirect charge type rotary atomizing head type coating device for a week.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/568,413 US7694645B2 (en) | 2004-02-23 | 2005-02-09 | Rotary atomization head painting device |
JP2006510211A JP4327846B2 (ja) | 2004-02-23 | 2005-02-09 | 回転霧化頭型塗装装置 |
EP05710259A EP1728557B1 (en) | 2004-02-23 | 2005-02-09 | Rotary atomization head painting device |
DE602005018177T DE602005018177D1 (de) | 2004-02-23 | 2005-02-09 | Drehzerstäubungskopf-lackiervorrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-046652 | 2004-02-23 | ||
JP2004046652 | 2004-02-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005079996A1 true WO2005079996A1 (ja) | 2005-09-01 |
Family
ID=34879449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/002359 WO2005079996A1 (ja) | 2004-02-23 | 2005-02-09 | 回転霧化頭型塗装装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7694645B2 (ja) |
EP (1) | EP1728557B1 (ja) |
JP (1) | JP4327846B2 (ja) |
KR (1) | KR100698569B1 (ja) |
CN (1) | CN100446869C (ja) |
DE (1) | DE602005018177D1 (ja) |
WO (1) | WO2005079996A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2008010451A1 (ja) * | 2006-07-19 | 2009-12-17 | Abb株式会社 | 回転霧化頭型塗装機 |
JP2012517334A (ja) * | 2009-02-09 | 2012-08-02 | サム・テクノロジー | 回転速度を検出するための検出デバイスを含む静電式噴霧器 |
EP3479905A4 (en) * | 2016-06-30 | 2020-03-11 | ABB Schweiz AG | STATUS DETERMINATION DEVICE, METHOD, PROGRAM, STORAGE MEDIUM |
JP2021533983A (ja) * | 2018-08-13 | 2021-12-09 | カーライル フルイド テクノロジーズ,インコーポレイティド | 噴霧システムコンポーネントの検出及び構成用のシステム及び方法 |
Families Citing this family (6)
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CA2691712A1 (en) * | 2009-02-16 | 2010-08-16 | Honda Motor Co., Ltd. | Electrostatic coating method and electrostatic coating apparatus |
DE102009051877A1 (de) * | 2009-11-04 | 2011-05-05 | Dürr Systems GmbH | Beschichtungsverfahren und Beschichtungsanlage mit dynamischer Anpassung der Zerstäuberdrehzahl und der Hochspannung |
JP5781546B2 (ja) * | 2010-02-05 | 2015-09-24 | エムエスピー コーポレーション | 液体前躯体を気化するための微細液滴噴霧器 |
CN102353596A (zh) * | 2011-08-30 | 2012-02-15 | 上海交通大学 | 一种应力路径自动控制三轴仪 |
CN106020255A (zh) * | 2016-07-15 | 2016-10-12 | 上海发那科机器人有限公司 | 一种玻纤流量闭环控制机器人 |
JP7021042B2 (ja) * | 2018-09-26 | 2022-02-16 | トヨタ自動車株式会社 | 塗装装置 |
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- 2005-02-09 CN CNB2005800006952A patent/CN100446869C/zh not_active Expired - Fee Related
- 2005-02-09 JP JP2006510211A patent/JP4327846B2/ja not_active Expired - Fee Related
- 2005-02-09 EP EP05710259A patent/EP1728557B1/en not_active Not-in-force
- 2005-02-09 DE DE602005018177T patent/DE602005018177D1/de active Active
- 2005-02-09 US US10/568,413 patent/US7694645B2/en not_active Expired - Fee Related
- 2005-02-09 KR KR1020067000778A patent/KR100698569B1/ko not_active IP Right Cessation
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2008010451A1 (ja) * | 2006-07-19 | 2009-12-17 | Abb株式会社 | 回転霧化頭型塗装機 |
JP4971327B2 (ja) * | 2006-07-19 | 2012-07-11 | Abb株式会社 | 回転霧化頭型塗装機 |
JP2012517334A (ja) * | 2009-02-09 | 2012-08-02 | サム・テクノロジー | 回転速度を検出するための検出デバイスを含む静電式噴霧器 |
US9138759B2 (en) | 2009-02-09 | 2015-09-22 | Sames Technologies | Electrostatic projector comprising a rotation speed detection device |
EP3479905A4 (en) * | 2016-06-30 | 2020-03-11 | ABB Schweiz AG | STATUS DETERMINATION DEVICE, METHOD, PROGRAM, STORAGE MEDIUM |
US11014104B2 (en) | 2016-06-30 | 2021-05-25 | Abb Schweiz Ag | State determination device, method, program, storage medium |
JP2021533983A (ja) * | 2018-08-13 | 2021-12-09 | カーライル フルイド テクノロジーズ,インコーポレイティド | 噴霧システムコンポーネントの検出及び構成用のシステム及び方法 |
JP7174145B2 (ja) | 2018-08-13 | 2022-11-17 | カーライル フルイド テクノロジーズ,リミティド ライアビリティ カンパニー | 噴霧システムコンポーネントの検出及び構成用のシステム及び方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1728557A4 (en) | 2008-04-09 |
EP1728557B1 (en) | 2009-12-09 |
US20070157881A1 (en) | 2007-07-12 |
EP1728557A1 (en) | 2006-12-06 |
US7694645B2 (en) | 2010-04-13 |
DE602005018177D1 (de) | 2010-01-21 |
CN1819875A (zh) | 2006-08-16 |
KR100698569B1 (ko) | 2007-03-21 |
CN100446869C (zh) | 2008-12-31 |
JPWO2005079996A1 (ja) | 2007-10-25 |
JP4327846B2 (ja) | 2009-09-09 |
KR20060033792A (ko) | 2006-04-19 |
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