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Coating device

A coating and paint technology, applied in spraying device, electrostatic spraying device, spraying electric energy device, etc., can solve problems such as discharge current fluctuation

Active Publication Date: 2020-04-03
TOYOTA JIDOSHA KK +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the above-mentioned coating device, only the distance between the rotary head and the workpiece is considered as a factor causing the discharge current to fluctuate during coating, and there is room for improvement.

Method used

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Embodiment approach

[0075] It should be noted that the embodiments disclosed this time are examples in all respects, and should not be the basis for a limited interpretation. Therefore, the technical scope of the present invention is defined based on the description of the claims, and not interpreted only by the above-described embodiments. In addition, the technical scope of the present invention includes all changes within the meaning and scope equivalent to the claims.

[0076] For example, in the above-described embodiment, an example in which the workpiece 200 is a vehicle body is shown, but the present invention is not limited to this, and the workpiece may be a member other than the vehicle body.

[0077] In addition, in the above-mentioned embodiment, an example was shown in which the total current I1 is calculated based on the voltage between the predetermined terminals of the voltage generator 5, but the present invention is not limited to this, and a current flow may be provided betwee...

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Abstract

The present invention relates to a coating device (100) that includes a rotary head (1), a power supply part (5) that applies a voltage to the rotary head (1), and a control part (51) that controls the power supply part (5). The rotary head (1) is configured so that a coating material is electrostatically atomized. The control part (51) is configured so as to calculate a discharge current based ona total current flowing from the power supply part (5) to the rotary head (1) and a leak current, and control the power supply part (5) based on the discharge current.

Description

technical field [0001] The invention relates to a coating device. Background technique [0002] A coating device including a rotary head is known (for example, refer to JP-A-2017-42749). [0003] The coating device of JP-A-2017-42749 is configured to discharge a thread-shaped paint from a rotary head and electrostatically atomize the thread-shaped paint, thereby forming paint particles and applying them to a workpiece. The coating device applies a high voltage to a rotary head through a voltage generator, and grounds a workpiece, whereby an electric field is formed between the rotary head and the workpiece. And, in the coating device, the output voltage of the voltage generator is adjusted according to the distance between the rotary head and the workpiece, thereby suppressing the fluctuation of the electric field intensity, and suppressing the fluctuation of the discharge current discharged from the rotary head toward the workpiece, so it is possible to make the electrosta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B5/04
CPCB05B5/0407B05B5/0418B05B5/0411B05B5/053B05B5/006B05B5/043B05B13/0452B05B5/08
Inventor 谷真二沼里亮田中一基近藤贵仁村井裕树平井勇气富田笃冈元健二增田直大
Owner TOYOTA JIDOSHA KK