DE102007063143A1 - Vibrating device for producing carbon electrodes for aluminum industry, comprises a vibrating table, which is seated on vertically arranged spring elements and carries a stage construction resting on supports, and a clamping device - Google Patents

Abstract

The vibrating device comprises a vibrating table, which is seated on vertically arranged spring elements (1) and carries a stage construction (8c) resting on supports (8), and a vertically working clamping device (9) centrically arranged in the vibrating table surface. The clamping device takes over by bracing, lifting and lowering of a molding box (2) with a hood (4) and matrices working as load. A lifting tie-bar is arranged within the construction and is connected with the lifting- and clamping device via an upper transverse support and a connection element. The vibrating device comprises a vibrating table, which is seated on vertically arranged spring elements (1) and carries a stage construction (8c) resting on supports (8), and a vertically working clamping device (9) centrically arranged in the vibrating table surface. The clamping device takes over by bracing, lifting and lowering of a molding box (2) with a hood (4) and matrices working as load. A lifting tie-bar is arranged within the construction, is connected with the lifting- and clamping device via an upper transverse support and a connection element, and has a cross connection at the lower end. The cross connection touches with the raising below a stop plate of the cover weight guidance. The lifting tie-bar unblocks vertically in the lowering of the stop plate to the pre-determined mass and then pushes with the upper cross connection and/or directly by a connection on the connecting construction on the hood. The molding box is braced with the vibrating table and is stopped during the vibrating procedure while pretensioned. The hood is laterally provided with fixed claws, which release during the raising of the hood, so that the claws are horizontally shifted for refilling the molding box toward image field and gripped with the further raising under the upper edge of form to only seize and the molding box with raise.

Description

The invention relates to a vibrator for the production of moldings by compression, in particular for the production of carbon electrodes for the aluminum industry, as already similar in the patent DE 37 24 199 C2 described, consisting of a seated on vertically arranged spring elements vibrating table, which carries a resting on several supports stage construction in the center - center of the vibrating table surface - a vertically acting clamping device is arranged from the top both the distortion and the lifting and lowering of the molds - ie molding box with arranged above hood and one or more guided therein as a ballast acting matrices - can take over.

In Numerous aluminum smelters are vibrating plants for the production of carbon electrodes in use, in which the molding box alone or together with the hood by means of two or ever according to size also z. B. four - hydrostatic actuated clamping devices is clamped. These clamping devices usually sit sideways of the mold walls and consist of a articulated lever system with springs, which is hydrostatically operated, so that the entire System can be folded sideways and delivered again for clamping and so tightly tightened that the molding box with hood and the supporting thereon load system (the so-called. Cover weight) under the dynamic load during the vibration process do not lift off the surface of the vibrating table can.

There these clamping devices in addition to the static holding forces also high dynamic loads at the corresponding vibrating frequency exposed, they must be very sturdy and structurally complex be built. It also requires opening and closing and the pressure build-up and dismantling during clamping and relax valuable time, the whole automatic machine cycle extended accordingly. Another disadvantage is that every clamping mechanism because of the numerous spherical plain bearings and the springs susceptible to interference and is maintenance-intensive, and corresponds to hydraulic equipment, supply lines with flexible hoses and for automatic Control according to electrical limit switch required. at larger machines with more than 2 clamping devices this expenditure is accordingly multiplied. For lifting and lowering both the mold box and the hood with the attached Cover weight separate lifting devices are provided, usually by means of hydraulic drives or electric winches Ropes or chains raise and lower the machine parts. These lifting devices also require considerable mechanical engineering effort because of the tons of heavy parts including control equipment. The machine cycle is also significantly influenced by the entspr. Time.

Of the Invention is based on the object, the aforementioned Disadvantages of the novel principle described below improve considerably, especially in terms of simplification the mechanical components, manufacturing costs and the ease of maintenance. This task is solved by that both for lifting and lowering the molds as well for clamping the molding box, only 1 centrally arranged lifting / lowering and tensioning device is required, preferably as vertical arranged differential hydraulic cylinder is executed. The particular advantage of this device is that much less mechanical components are required and that the required Time to lower the molds, cocking the mold box and again Relaxing and lifting the molds is much less than if these functions are consecutive from different, separate controlled facilities would be accomplished.

Further details, features and advantages of the invention will become apparent from the following description of an embodiment schematically illustrated in the drawing:
Figure 1 shows the entire machine in a central vertical section.

The illustrated vibrating table ( 1 ) is spring-mounted in a known manner on the foundation on several spring elements ( 1a ) and is controlled by 2 unbalance units ( 1b ) offset in vertical vibrations. On the table ( 1 ) is the molding box ( 2 ) and with the mass to be compacted or the finished after shaking block ( 3 ) filled. To the mass ( 3 ) acts from above the deck weight surcharge ( 5 ) with the die formed for the formation of the surface ( 5b ). This cover weight ( 5 ) by a stamp ( 5a ), which is supported upwards against a Nachfuhr- and pressure element ( 6 ), which in turn on the upper traverse ( 4b ) a connecting structure ( 4a ) on the hood ( 4 ) is attached.

Through the central on the upper stage ( 8c ) displaced hub / pressure device ( 9 ) can by means of the compound ( 9a ) the intermediate beam ( 7 ) are raised and lowered. During the lifting process, the traverse ( 7 ) until the lower connection ( 7a ) with the stop plate ( 6a ) of the cover weight stamp ( 5a ) is in contact. Then follows the lifting of the cover weight ( 5 / 5b ) from the field of the molding box ( 2 ) out to the stop on the upper inside of the hood ( 4 ).

Upon further lifting, the claws ( 4c ) the hood ( 4 ) under the upper mold edge of the molding box ( 2 ) and this is so far raised with, until the finished block is exposed for pushing out. When lowering, the described functions are carried out in reverse order, whereby after placing the mold box ( 2 ) on the vibrating table surface ( 1 ) and the application of the cover weight ( 5 / 5b ) on the loose mass ( 3 ) the intermediate beam ( 7 ) with the lower compound ( 7a ) with pressure on the hood ( 4 ) and thereby the molding box ( 2 ) is firmly clamped to the vibrating table.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3724199 C2 [0001]

Claims (5)

Vibrating device for the production of molded articles by compaction, in particular for the production of carbon electrodes for the aluminum industry, consisting of a vibrating table seated on vertically arranged spring elements (US Pat. 1 ), one on several supports ( 8th ) stationary stage construction ( 8c ), in the center of which - at the center of the vibrating table surface - a vertically acting tensioning device ( 9 ), which from above both the bracing and the lifting and lowering of the molds - ie molding box ( 2 ) with hood arranged above it ( 4 ) and one or more of them as a surcharge ( 5 / 5b ) acting matrices - can take over. Rattle device according to claim 1, characterized in that within the stage structure ( 8th ) a Hubtraverse ( 7 ) is arranged, which via an upper cross member ( 7b ) and a connection element ( 9a ) with the lifting and tensioning device ( 9 ) connected is. Rattle device according to claim 1, characterized in that the Hubtraverse ( 7 ) at the lower end a cross-connection ( 7a ), which when lifting under a stop plate ( 6a ) of the cover weight management ( 5a ) and thereby the cover weight ( 5 ) with. Rattle device according to claim 1, characterized in that the Hubtraverse ( 7 ) when lowering first the stop plate ( 6a ) when setting the cover weight ( 5 / 5a ) to the mass to be compacted ( 3 ) vertically and then either with the upper cross-link ( 7b ) or directly by means of connection ( 9a ) on the connection construction ( 4b / 4a ) on the hood ( 4 ) and thus the molding box ( 2 ) with the vibrating table ( 1 ) and under bias during the shaking process. Vibrating device according to claim 1, characterized in that the hood ( 4 ) laterally with fixed claws ( 4c ), which when lifting the hood ( 4 ) first the molding box ( 2 ) so that it can be moved horizontally in the direction of the image plane - z. B. for refilling the molding box ( 2 ) - and only on further lifting under the upper edge of the form grab and lift the molding box with.