Spray control method and device

Abstract

The invention discloses a spray control method and device. The method comprises the steps that the horizontal distance L from a workpiece detection sensor to an outlet of a spray room is divided into M sections of unit lengths, register address values are allocated for the sections respectively, and first position information of a first spray gun and an initial register address value are recorded; a conveying chain is started, the recording action of the sensor is triggered when the conveying chain advances and overflows each unit length, the register address value corresponding to the overflow unit length is allocated to the advancing unit length, and the recording frequency N of the sensor and sensor state information are recorded; according to the recording frequency N and the first position information, the first register address value corresponding to the current position of the first spray gun is calculated; and whether the spray gun needs to be started or not is judged according to the sensor state information corresponding to the first register address value. According to the technical scheme, the workpiece size and number between the detection sensor and the spray gun do not need to be limited again, start and stop of the spray gun are effectively and accurately controlled, and spray accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of painting, in particular to a spraying control method and device. Background technique [0002] In modern manufacturing, in order to make the material of the workpiece itself meet some special surface quality and special use environment requirements, it is necessary to add different coatings on its surface. With the development of spraying technology, the traditional powder spraying process is gradually replaced by electrostatic powder spraying. The whole spraying process only needs to go through pretreatment, spraying and curing. [0003] Electrostatic powder spraying is based on the physical phenomenon of electrophoresis. The workpiece to be coated and the paint atomizer are used as the anode and cathode respectively, and a high-voltage electrostatic field is formed between the two electrodes, so that the negatively charged paint is evenly attached to the object under the action of the electric field. S...

AI Technical Summary

Problems solved by technology

The disadvantages are: when there are multiple spray guns, complex time recording and comparison programs need to be written, while the PLC time controller and high-speed counter are limited, the increase in the number of spray guns is complicated and difficult to modify, and the speed of the conveyor chain can be changed. , when the speed changes, the relevant time needs to be readjusted, and only one workpiece is allowed to exist between the sensor and the spray gun, thus reducing the production output

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