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Printheads for applying coatings to components

A technology of coating agent and printing head, which is applied in the direction of surface coating liquid devices, coatings, spraying devices, etc., which can solve problems such as difficult flushing of the printing head, coating deposition, failure, etc., and improve leakage safety , fast color change, short rinsing process

Active Publication Date: 2022-05-03
DUERR SYST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A disadvantage of these known print heads is that the valve actuators including the valve needles are exposed to the coating agent to be applied
On the one hand, this can lead to paint deposits on the valve actuator, which in the worst case can lead to failure
On the other hand, this is also problematic when different types of coating agents are to be applied one after the other when performing a color change, since conventional designs make flushing of the print head more difficult

Method used

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  • Printheads for applying coatings to components
  • Printheads for applying coatings to components
  • Printheads for applying coatings to components

Examples

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Embodiment Construction

[0055] figure 1 Shows a schematic diagram of a print head according to the invention, which can be used, for example, for the application of paint in the continuous painting of body parts in a paint shop, wherein the print head is controlled by a robot with standard robot kinematics. Multi-axis painting robot guidance.

[0056] The print head has a plurality of nozzles 1, 2, 3 in the nozzle plate in order to apply paint to the part surface of the part to be painted, whereby spatially narrow paint jets (continuous or in the form of droplets). To simplify matters, only three nozzles 1-3 are shown in the figure. In reality, however, the printhead has a greater number of nozzles.

[0057] Each of the nozzles 1-3 is correspondingly equipped with a control valve 4, 5 or 6 to open or close the nozzle 1-3.

[0058] The individual control valves 4 - 6 each have a coil 7 , 8 or 9 with a coil core 10 , 11 or 12 .

[0059] Furthermore, the control valves 4 - 6 each have a movable arm...

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Abstract

The invention relates to a printing head for applying coating agents to components, in particular for applying paint to motor vehicle body parts, which has at least one outlet opening for dispensing coating agent ( 1‑3); a coating agent supply (21) for supplying coating agent to the outlet opening (1‑3); a movable valve element (13‑3) capable of moving between an open position and a closed position 15), the valve element (13-15) closes the outlet opening in the closed position, and the valve element (13-15) releases the outlet opening (1-3) in the open position; and the valve actuator (7-15) for Moves the valve element (13‑15) between an open position and a closed position. The invention also relates to a flexible membrane (19) separating the valve actuator from the coating agent supply (21), the actuator side of the membrane (19) facing the valve actuator (7‑15) And the coating agent side is exposed to the coating agent in the coating agent supply part (21).

Description

technical field [0001] The invention relates to a printing head for applying a coating agent to components, in particular a printing head for applying paint to body parts. Background technique [0002] For the continuous painting of body parts, rotary atomizers are often used as application devices, but these devices have the disadvantage of limited application efficiency, i.e. only a part of the applied paint is deposited on the part to be coated, while the rest is applied The paint must be treated as a so-called overspray. [0003] On the other hand, newer development lines provide so-called printing heads as application devices, as are known, for example, from DE 10 2013 002 412 A1, US 9,108,424 B2 and DE 10 2010 019 612 A1. In contrast to known rotary atomizers, this print head does not spray a spray of the paint to be applied, but a narrow jet of paint which deposits almost completely on the part to be coated, Overspray therefore hardly occurs. [0004] With known pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B1/30B05B13/04B05B1/14
CPCB05B1/14B05B1/3046B05B1/3053B05B1/306B05B13/0452B05C5/0237B05C5/0275B05C5/022B05C11/1028B05C11/1034F16K1/00
Inventor H-G·弗里茨B·沃尔M·克莱纳M·布贝科T·贝尔F·赫勒S·索茨尼
Owner DUERR SYST GMBH
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