SU881156A1 - Unit for coating small parts - Google Patents

Description

The invention relates to an application coated} 1st. Closest to the invention, the coater for small parts is loaded into a cassette located inside the bath. The cassette is fixedly fixed in the bath, equipped with a tube and a cone-shaped divider for hydrojet mixing of the parts. due to the impossibility of precise centering of the pipe and the conical dissecting of l relative to the axis of the cartridge inlet nozzle, there is a concentration of parts in one of the sides of the annular gap between the pipe and the cassette; Aley to form a vault .ih sticking together. Poor mixing and adhesion resulting from this leads to uneven coating of parts, the formation of a common film to be covered and the inevitability of defects. The presence in the cassette of a pipe and a cone divider makes it impossible to cover the details of a wider range without adjusting the gap between the tapered portion of the cassette and the pipe, which worsens the conditions for unloading parts. In addition, for the mixing of parts by the ejection method, a greater pressure of the liquid jet is required due to the pipe resistance and the resistance that occurs in the annular gap between the pipe and the tapered portion of the cassette. The presence of a divider over the pipe increases this resistance. In the process of applying coatings to small children, it is necessary to mix the details intexically, which significantly affects the uniformity of coatings, improves the quality of the coating on parts, and increases the productivity of the installation. The aim of the invention is to intensify the process and improve the quality of coatings. The goal is achieved by the fact that the installation for coating

for small parts, containing a bath with a cassette placed in it, a nozzle for supplying the solution to the cassette and a pump with an actuator, is equipped with an element with the element for guiding the solution located between the cassette and the nozzle, and a mesh placed on the upper end of the element.

The element for directing the solution is made in the form of a screw or in the form of a washer with through channels, the axes of which are arranged in concentric circles and directed tangentially to these circles and at the same time at an angle to the diametrical plane of the washer cross section.

The solution supplied by the pump, the passage through the guide element, receives an additional rotational movement and, under the action of the pressure of the jet, the rotation intensively mixes the parts.

FIG. 1 shows the installation, general view; in fig. 2 shows section A-A in FIG. 1 (with a screw guide); in fig. 3 is a section A-A in Fig. 1 (with a guide element in the form of a washer with through channels).

The device comprises a bath 1 with a solution, fixedly fixed in it a cassette 2 connected to the nozzle 3 supplying the solution to the cassette 2, a pump 4 with a drive, a holder 5 with an element 6 for guiding the solution, mounted on the upper end of the grid 7.

The device works as follows.

In the bath 1, filled with the solution, a cassette 2 is placed, which is connected to the pump 4 feeding the solution through the connection pipe 3 of the solution supply to the cassette 2. Between the cassette 2 and the nozzle 3, the holder 5 is installed with the solution direction element 6 in the form of an auger, in which the solution, the entrance to the screw channels, receives translational-rotary motion and, passing through the separating grid 7, captures and mixes the coated parts together with the solution, Schims in the cassette.

With the element 6 for directing the solution, made in the form of a washer with through channels directed under the angle, the solution passes through the channels and exits in the form of numerous jets directed tangentially to the axis of the cassette and at the same time at an angle to the diametral plane of the section of the washer, which through the separating grid 7, the parts to be coated are rotated and mixed together with the solution in the cassette.

The pressure of the crpyw created by the pump and the rotation of the solution formed by the guiding apparatus ensures intensive uniform mixing of the parts to be cut. The separator mesh 7 prevents parts from entering the guide vane when the pump drive is off.

Through the use of such a device, intensive and uniform mixing of the parts to be coated is provided, the possibility of arching and sticking the parts together is eliminated, which guarantees uniform high-quality coating of parts, reducing operational costs.

Claims (3)

1. Installation for coating small parts, containing a bath with a cassette placed in it, a pipe for feeding the solution to the cassette and a pump with a drive, so that, in order to intensify the process and improve the quality of the coatings it is provided with a yoke with an element for guiding the solution located between the cassette and the nozzle and a mesh placed on the upper end of the element. 2. Install by. 1, characterized in that the element for guiding the solution is made in the form of a screw. 3. Installation according to claim 1, which is designed so that the element for directing the solution is made in the form of a washer with through channels, the axes of which are arranged in concentric circles and directed tangentially to these circles and at the same time at an angle to the diametral washer section plane. Information sources, . taken into account in the examination I. USSR author's certificate No. 176774, cl. C 25 O 17/18, 1963. 5