Cleaning and liquid contact with solids – Apparatus – Sequential work treating receptacles or stations with means...
Patent
1989-03-30
1991-05-14
Cuchlinski, Jr., William A.
Cleaning and liquid contact with solids
Apparatus
Sequential work treating receptacles or stations with means...
134 82, 118423, 118428, 414222, B05C 302
Patent
active
050147269
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an apparatus for conveying article carriers along a succession of processing stations. More particularly, the invention relates to an apparatus for conveying articles in an installation for dip treatment.
Although it is not so limited, the apparatus according to the invention is applicable with particular advantage in cases where individual articles, or groups of articles handled as a unit, are to undergo a multi-step treatment involving dipping of the articles or article units in a succession of processing baths in accordance with a predetermined program.
Installations for that kind of treatment have to be readily adaptable, without having to be complicated, to the particular treatment to be carried out. Such adaptation may involve, for example, changing the number or type of baths, changing, in respect of one or more baths, the time that the articles are immersed in the baths, changing the time elapsing between the raising of an article from one bath and the immersion of the article in the next bath, and including or omitting agitation of the articles immersed in the baths.
An object of the invention is to provide an apparatus that meets this requirement in an advantageous way.
SUMMARY OF THE INVENTION
To this end, in an apparatus for conveying article carriers along a succession of processing stations, particularly an apparatus forming part of an installation for dip treatment of articles supported by the article carriers, which apparatus comprises means for stepwise displacement of the article carriers in succession on a processing track which supports the article carriers and along which the processing stations are positioned, and means for vertically displacing the article carriers individually between an upper and a lower position, said means including for each processing station an article carrier support which defines a separate section of the track and is movable between the upper position and the lower position together with an article carrier, control devices are associated with respective ones of the article carrier supports and positioned along the processing track, the control devices being connected to said means for vertically displacing the article carriers and adapted to trigger the vertical displacement of the respective associated processing track section in response to an article carrier occupying a predetermined position on the processing track.
An embodiment of the invention is described in greater detail hereinafter, by way of example, with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an elevational view of a dip treating installation incorporating a conveying apparatus according to the invention;
FIG. 2 is a plan view of the installation;
FIG. 3 is a view of the installation as viewed from the right in FIG. 1;
FIG. 4 is a view similar to FIG. 3 but showing certain parts in a different position;
FIG. 5 is a circuit diagram of a portion of an electrical control system for the vertical movement of lifting devices; and
FIG. 6 shows a return track for sliders as viewed from line VI--VI of FIG. 4.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The conveying apparatus shown by way of example is intended for conveying articles in the shape of flat plates through a succession of processing stations comprising a row of six tanks which hold baths into which the plates are to be dipped. In FIGS. 1 and 3, such plates are indicated in phantom lines and designated by S. In the interest of simplicity of illustration, the row of tanks is shown only in FIGS. 2 and 3 where it is designated by T.
While it is being conveyed through the processing stations, that is, from one end of the row of tanks T to the other, each plate S is held by an article carrier in the shape of a slider 11 having a plate holder 12 provided with two clamps 12A, 12B. The sliders 11 are moved in a circulatory system in a manner described in greater detail below.
The conveying apparatus comprises eight lifting devices 13A-13H
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Cuchlinski Jr. William A.
Dowling William C.
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