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Printing head for the application of a coating medium

A technology of jet printing head and coating agent, which is applied to the device, coating, printing and other directions of coating liquid on the surface, which can solve the problem that the distance between nozzles cannot be lower than the lower limit, the limitation of the manufacturing precision of elastomer inserts, the fluctuation of valve stroke, etc. question

Active Publication Date: 2019-07-30
DUERR SYST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of this well-known type of seal between the movable valve element (e.g. the valve needle) and the nozzle is above all the complex manufacturing process involved in making the elastomeric insert
[0006] Another disadvantage is that valve needles with elastomeric inserts can only be miniaturized within certain limits, so that the nozzle spacing between adjacent nozzles cannot fall below a lower limit
[0007] In addition, the manufacturing precision of the elastomeric inserts is limited, resulting in large fluctuations in the required valve travel

Method used

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  • Printing head for the application of a coating medium
  • Printing head for the application of a coating medium
  • Printing head for the application of a coating medium

Examples

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Embodiment Construction

[0064] Below we first describe the basis of figure 1 the embodiment. This figure shows a schematic diagram of a control valve in a printing head according to the invention, which is used in a painting line for the application of paint for painting body parts, wherein the printing head is known from the prior art The multi-axis painting robot moves with standard robot kinematics with at least six robot axes, so no detailed description is required.

[0065] The printing head according to the invention has a nozzle plate 1 with a plurality of nozzles 2, therefore only a single nozzle 2 is shown here for the sake of simplicity.

[0066] The paint to be applied is fed from a paint feed 3 in the printhead, so the paint feed 3 in the figure is bounded at the bottom by the nozzle plate 1 and at the top by another plate 4 .

[0067] The upper plate 4 has an opening coaxial to the nozzles 2 in the nozzle plate 1 , on which opening the coil former 5 is placed coaxially, whereby the coi...

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Abstract

The invention relates to a printing head for the application of a coating medium to a component, in particular for the application of a paint to a motor vehicle body component, with a nozzle plate (1), a nozzle (2) in the nozzle plate (1) for emitting the coating medium, and a valve element (9, 11) which can be moved relative to the nozzle plate (1) for controlling the coating medium emission through the nozzle (2), wherein the movable valve element (9, 11) closes the nozzle (2) in a closed position, whereas the movable valve element opens the nozzle (2) in an open position, and with a seal (11, 12) for sealing the nozzle (2) with respect to the movable valve element (9, 11) in the closed position of the valve element (9, 11). The invention provides that the seal (11, 12) is not configuredas an elastomer insert on the valve element (9, 11).

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] Rotary sprayers are commonly used as application devices for the serial painting of body parts, but these sprayers 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 applied The remainder of the applied paint must be treated as so-called overspray. [0003] On the other hand, newer development lines provide so-called printing heads as application devices, 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 sprayers, such a print head sprays not a spray of the paint to be applied, but a spatially narrowly restricted paint jet that deposits almost completely on the part to be painted, thus Almost no overspray occurred. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B1/08B05B1/30B05B1/32B05B1/14B05B13/04
CPCB05B1/14B05B1/3046B05B1/3053B05B1/306B05B1/3073B05B1/32B05B13/0452B41J2202/05B05C5/0237B05C11/1028B05C5/0291B05C5/0275
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