Acheson Industries, Inc.

Henkel Corporation

Hans-Dieter Renkl

Karl-Heinz Keim

Douwe Marten Kok

Thomas Junker

Rudi Kober

Douwe-Marten Kok

The invention provides a sprayer for spraying mold wall treatment agent or another liquid. The liquid is sprayed onto, for example, the walls of a mold or some other article. The sprayer includes a spray element body and a rotor mounted with freedom to rotate around an axis of rotation in the spray element body. An atomizing element is attached to one end of the rotor. A first feed line for mold wall treatment agent or another liquid to be sprayed is provided, as well as a second feed line for control air which directs mold wall treatment agent atomized by the atomizing element in the desired spray direction.

Device for preparing the walls of a mold for molding or shaping to make them ready for the next molding cycle

In a process and in a device ( ) for preparing the mold walls ( ) of a mold ( ) for the molding or shaping of a molded part after completion of the molding cycle and after removal of the molded part from the mold ( ) to make the mold walls ready for the next molding cycle, the tempering of the mold walls ( ) and the coating of the walls with mold wall treatment agent are carried out independently of each other, i.e., without any time overlap, and in a controlled manner, preferably in a program-controlled manner. To apply the coating, preferably a spray element with centrifugal atomization and air control is used, the mold walls preferably being coated with essentially solvent-free mold wall treatment agent.

Device for preparing the walls of mold for molding or shaping to make them ready for the next molding cycle

In a process for preparing the mold walls (,) of a mold (,) for the molding or shaping of a molded part after completion of the molding cycle and after removal of the molded part from the mold (,) to make the mold walls ready for the next molding cycle, the tempering of the mold walls (,) and the coating of the walls with mold wall treatment agent are carried out independently of each other, i.e., without any time overlap, and in a controlled manner, preferably in a program-controlled manner. To apply the coating, preferably a spray element with centrifugal atomization and air control is used, the mold walls preferably being coated with essentially solvent-free mold wall treatment agent.

Process for preparing the walls of a mold for molding or shaping to make them ready for the next molding cycle

Process for the application of a liquid die wall treatment agent to areas of the die walls of a molding device by means of at least one spray element with metering of the flow rate of the die wall treatment agent by a metering valve. The metering valve having a metering cross section for the liquid die wall treatment agent and influenced by a secondary fluid including a metering valve with a valve membrane of variable shape, one side of which is acted on by the die wall treatment agent, while the other side is acted on by the secondary fluid, and the pressure on at least one side of the membrane is influenced by flow rate adjusting means, which results in variable flow rates and the variable flow rates are determined by different positions of the membrane.

Spray element especially for mold sprayers

A spray element for use with a mold sprayer of the type used to spray a mold prior to or between cycles of a manufacturing operation such as die-casting, drop forging or other operations involving the working of metals. The spray element includes a valve body having an internal elastic pretension. The valve body may be positioned in either an open or closed position in relation to a valve seat. A control pressure is applied, through a separate feed line, to the valve body to open and close the valve by forcing the valve body against or away from the valve seat. The spray element also includes a feed line supplying working air which cooperates with an atomizer attached to a feed line supplying a working medium to the atomizer to atomize the working medium when the valve body is actuated.

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Berghülen, Germany

Hans-Dieter Renkl