SU1294879A1 - Drum for liquid treatment of fine articles - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to devices dp the liquid processing of small products. The purpose of the invention is to simplify the design and increase ease of operation. After loading a certain number of products, they are processed by rotating the drum 1 without reversing. When the drum rotates, the products slide along the internal parts of the spiral walls 3 and 4. When the drum rotates, a new portion of electrolyte enters the gap, and part of the electrolyte from the working chamber is removed by gravity through the l-shaped axes. Since perforations are made in the lower part of the hollow axis on the L-shaped part, the penetration of the processed products into the opening is excluded. The invention allows for improved performance by increasing reliability. 2 hp f-ly, 3 ill. c (O ate ND CO 4 00 H CO CO (rig. g

Description

The invention relates to mechanical engineering, in particular to equipment for tamping, washing, underwater grinding, polishing, and can be used to apply electroplating or chemical coatings on small articles.

The aim of the invention is to simplify the design and improve ease of operation.

FIG. 1 shows a drum, a general view, FIG. 2 is a section A-A in FIG. 1, rotated 90 °; in fig. 3 is a variant of the inner part of the drum.

The drum for processing small products contains a working chamber 1 consisting of side walls 2, longitudinal spiral walls 3 and 4, provided with cathode-contact strips 5 and c, with partial perforation 6, which is supplied to the current through a system that slides contacts known in electroplating methods, fixed hollow; L-shaped axes 7, on the lower parts of which perforations 8 are made. The double axes are fixed with the possibility of turning them at a certain angle around the geometrical axis. The inner parts of the spiral walls can be multifaceted 9.

The drum works as follows.

Through the gap about. The workpieces 10 are loaded into the working chamber. A second portion of the products to be processed can be loaded by rotating the drum 360. After loading a certain number of products, they are processed by rotating the drum without reversing in the direction indicated in FIG. 2. When tumbling, grinding, polishing, the processed material is loaded simultaneously with the products. During underwater grinding and polishing, the drum with the products is lowered into the bath with the treatment solution (for electroplating with electrolyte (not shown).

When applying the electroplated coating of the product, as the drum rotates, it slides along the inner parts of the spiral-shaped walls 3 and 4 in contact with the cathode-contact strips 5. When the drum rotates in the direction indicated in FIG. 2, after each revolution a new portion enters the gap.

of the electrolyte, and from the working chamber a part of the electrolyte is removed by gravity through the L-shaped hollow axles 7. Since on the L-shaped part of the hollow axis

the perforation 8 is made in the lower part, then the entry into the hole of the processed products is excluded. The electrolyte level in the working part is regulated by the rotation of the G-b

axis 7. To completely remove the electrolyte from the working chamber, the drum is removed from the bath and its rotation over the bath continues for some time. For a few turns all electrolyte

is removed from the working chamber through the perforation holes 6. After that, the drum is transferred to the next position or set over the container and begins to rotate in the opposite direction.

The products are then discharged through the gap 8 into a container (not shown). When electroplating products electrolyte freely pass into the working chamber through the gap, cx. and S with minimal resistance. In addition, electrolyte is constantly circulating. Small items, such as sewing needles, slide on a smooth surface, are not combustible and cannot be removed from

working chamber. All this ensures the processing of small products with high productivity and quality of applied electroplated coatings. The drum can be used in lines where tumbling, grinding, polishing, washing, electroplating or chemical processing, i.e. in lines with deserted technology.

Claims (3)

Invention Formula 1 "A drum for liquid processing of small products containing the working chamber mounted on the semi-axes with the possibility of rotation, which is the fact that, in order to simplify the design and increase the convenience in operation, the longitudinal walls of the working chamber are made in the form of spiral plates installed in the center; relative to each other. 2. A drum according to claim 1, characterized in that the lower portions of the hollow semi-axes located inside the chamber have perforations. 3 129А8794 3. Drum on PP. 1 and 2, about t of the IL-axes, placed inside the chamber, due to the fact that the parts are l-shaped. luosay placed inside executed by L-shaped. P one L L / / I ///// about FIG. t Editor N. Lazarenko Compiled by I. Saakova Tehred I.Popovich Proofreader A. Tsko Order 565/29 Circulation 613 VNSh111I USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk ab. 4/5 Production and printing company, Uzhgorod, st. Project, 4 (rig. 3 Subscription