Method for process diagnosis and rotary atomizer arrangement
First Claim
1. A rotary atomizer arrangement for coating workpieces, comprising a rotatably mounted spraying element for the coating material, an electric drive motor configured to drive the spraying element, an automatic control system programmed to control the electric drive motor, and an electronic evaluating apparatus programmed to evaluate at least one characteristic value of the electric drive motor to analyze at least one process parameter that represents switching times of a valve controlling an outflow of the coating material from the rotary atomizer, wherein the at least one characteristic value includes a change in electric power drawn by the electric drive motor, wherein the automatic control system is programmed to control the valve according to the determined switching time.
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Accused Products
Abstract
A rotary atomizer arrangement and methods for operating the same are disclosed. An exemplary atomizer may be used for the coating of work pieces, and may include a bell plate driven by an electric motor. The exemplary atomizer may further be configured for the detection of errors in the spraying process and/or the drive system of the bell plate, such as by analyzing corresponding parameters of typical values of the drive motor.
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Citations
20 Claims
- 1. A rotary atomizer arrangement for coating workpieces, comprising a rotatably mounted spraying element for the coating material, an electric drive motor configured to drive the spraying element, an automatic control system programmed to control the electric drive motor, and an electronic evaluating apparatus programmed to evaluate at least one characteristic value of the electric drive motor to analyze at least one process parameter that represents switching times of a valve controlling an outflow of the coating material from the rotary atomizer, wherein the at least one characteristic value includes a change in electric power drawn by the electric drive motor, wherein the automatic control system is programmed to control the valve according to the determined switching time.
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13. A rotary atomizer comprising:
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a spraying element; an electric drive motor configured to drive the spraying element; a controller programmed to control the electric drive motor and to evaluate a change in electric power drawn by the electric drive motor to determine a switching time of a valve controlling an outflow of a coating material from the spraying element based at least in part on the change in electric power, wherein the controller is programmed to control the valve according to the determined switching time. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A rotary atomizer comprising:
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a spraying element; an electric drive motor configured to drive the spraying element; a controller programmed to control the electric drive motor and to evaluate a change in electric power drawn by the electric drive motor to determine a switching time of a valve controlling an outflow of a coating material from the spraying element based at least in part on the change in electric power, wherein the controller is further programmed to evaluate at least one of;
an electric current of the electric drive motor, a pattern of the electric current of the electric drive motor, a torque of the electric drive motor, an acceleration of the electric drive motor, a rotary speed of the electric drive motor, and a load on the electric drive motor caused by at least one of the spraying element, the coating material, a rotational imbalance of the spraying element, and a mounting of a drive shaft,wherein the controller is programmed to control the valve according to the determined switching time.
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Specification