DE19528711A1 - Mechanical electromagnetic valve for paint or ink - has valve element operated by axially displaced magnetic armature controlled by coil for accurate dispensing of paint or ink drops - Google Patents

Abstract

The valve controls the flow of a liquid or paste between an input (1) and a dispensing output (8) via an axially displaced valve element (6). The element is operated by a magnetic drive (5) with a coil (3), a magnetic core (2) and a magnetic armature (3). The magnetic armature is reciprocated by corresponding control of the coil for operation of the valve element to provide repetitive dispensing of accurate drops of paint or ink.

Description

The invention relates to a mechanical electrical system solenoid valve that is capable of appropriate control is, contactless points with different media, here in particular with colors and inks.

Solenoid valves for this purpose are known and in use.

In the known solenoid valves of the type mentioned at the beginning, the solenoid valve generally consists of a hollow body in which a rotary element with different channels is inserted. Furthermore, an inlet ( 1 ) and an outlet ( 8 ) are inserted into the hollow body. This is then shed in its entirety.

This part ( 4 ) rotating in small degrees, back and forth is moved by appropriately controlled coils ( 3 ).

The known solenoid valves ( 5 ) of the type mentioned at the outset are now pressurized on the inlet side with ink or comparable media.

When closed, these media have no flow through this valve.

When open, the media can use the narrow channel happen.

This results in a wave of this medium in the outlet area ( 7 ) of the valve. This wave propagates in the tube or hose ( 8 ) which is usually connected downstream.

This creates a drop at the exit.  

This process has some disadvantages which in particular the use of various color types that are made on a solvent basis. This means that the shaft in the subsequent pipe path only through the process of opening the flow of water in the Rotary body located channel is realized kinetic energy generated by the overpressure very low.

This allows only a very limited number of drops generated per second. These then have on the discharge mouth even a low flight ability.

Proceeding from this, it is now the object of the invention the initially mentioned solenoid valve to that effect develop that with it a much higher drop frequency can be generated.

That is the kinetic force involved in creating the drop is used, is much higher and the drop of the corresponding medium thereby a much wider one Flight path has.

Since the direct action through the closure element ( 6 ), the path of which can be adjusted very repeatedly, the ejection of the medium is much more precise and this ensures a very precise drop image. Due to the nature of the invention described here, the use of other types of liquid or semi-pasty media is also possible, which until now could not be processed with the known solenoid valves.

Claims (6)

1. Mechanical solenoid valve that moves in the axial direction, permeable to colors and any other kind of liquid or semi-pasty media, sealed as needed or can be opened. 2. Mechanical solenoid valve according to claim 1 characterized in that by the special nature of the Construction, precise dosing of the medium can be reached. 3. Mechanical solenoid valve according to claim 1 characterized in that the medium output without a nozzle is feasible and repeatable. 4. Mechanical solenoid valve according to claim 1 characterized in that by the special nature of the Construction the point between creating the drop and your actual eject from your system, one allows considerable path. This channel can, made of solid material, such as tubes, but also made of flexible material, such as hoses consist. 5. Mechanical solenoid valve according to claim 1 characterized in that the discharge of the drop in a straight axis to the actual magnetic play possible is, as well as any deviation from the straight line.