SU929245A2 - Apparatus for applying coating on flanged article surface by dipping method - Google Patents

Description

one

The invention relates to devices for coating the surface of products by immersing it in a bath with a liquid in a vertical direction and can be used when applying coatings on certain surfaces of the product.

According to the main author. St. No. 528125 discloses a device for coating by immersion on a surface of a flanged product comprising a bath installed with the possibility of reciprocating in a vertical plane and provided with a spring-loaded housing surrounding it and installed with a gap relative to it.

In addition, the device comprises a fixed bath filled with a coating material. A movable bath is placed inside the fixed bath, which with the help of the power cylinder performs a vertical movement, during which the product with a flange is immersed. The power cylinder is located adjacent to the fixed bath. Bathtub

connected to the power cylinder using a bracket 1.

However, when the bath is lifted and the coating is applied, the surface poured into the gap between the casing and the movable bath is displaced from the movable bath, when it hits the support carrying the bath, straps and the flange of the bath bottom, splashes over the surface of the fixed bath, which leads

Q loss of coverage. At the same time, an increase in the diameter of the fixed bath, leading to an increase in the capacity of the latter, is highly undesirable, since during the transition to the casting of metal pipes, the technology for casting pipes from which requires changing the coating,

15, consisting of other components, due to the increase in the volume of the coating to be poured and re-cast, the time is lengthened, the change cycle of the coating in the fixed bath is complicated, the losses increase

2Q and coverage rate.

In addition, the use of coatings having lower sedimentation stability in a known device is difficult due to insufficient movement of the coating components. The purpose of the invention is to ensure a reduction in the consumption and loss of the coating material and the improvement of its mixing. This goal is achieved due to the fact that, in a device for coating by immersion on the surface of a product with a flange, the power cylinder for vertical movement of a movable bath is equipped with eyelets fixed to the rod, and is installed coaxially under the fixed bath, the bottom of which is made in the form of a diaphragm with ring corrugations, fixed in the center on the rod of the power cylinder, and the side walls are made of separate, provided with eyelets on the inner side, elements connected to the bottom of the fixed bath and between themselves sheet elastic material forming loops at the points of attachment to adjacent elements, with the lugs of the elements connected to the lugs of the power cylinder rod by means of t g. In FIG. 1 shows the proposed device, a general view; in fig. 2 - the same, top view. The device for immersion coating on the surface of the product with a flange includes a power cylinder 1 for vertical mixing of the movable bath 2. The product 3 is placed with the closing flange 4 above the bath 2 by means of an installation unit with a vertical spindle, which is equipped with multi-position centrifugal masks (not shown ). The movable bath 2 is fixed with a nut 5 to the rod 6 of the power cylinder 1 and provided with a movable casing 7 covering it with a gap, which is mounted on pins x 8 located in the openings of the bottom flange of the bath and is spring loaded 9. The power cylinder 1 is installed under the fixed bathroom 10 coaxial with it. The bottom 11 of the fixed bath 10 is made in the form of a diaphragm with annular corrugations 12, fixed centrally to the flange 13 of the rod of the power cylinder 1. The side walls of the fixed bath are made of separate elements 14, provided with ridges 15 on the inner side, and are interconnected with the bottom of the bath using sheet elastic material 16, for example, rubber, which forms loops at its attachment points to adjacent elements. Power cylinder 1 is provided with lugs 17, fixed with pins 1 8 on rod 6. Lugs 15 of individual elements are connected to eyes of 17 rod 6 of power cylinder 1 of vertical movement of the movable bath by means of t 19 and mounted on axles 20. Power cylinder 1 and fixed bath 10 mounted on the frame 21 of the device. In the initial position, the movable bath 2 together with the housing is placed in the fixed bath 10 with a coating and is filled with the latter. The coater operates as follows. The article 3 prepared for the coating operation is stirred vertically above the movable bath 2 coaxially with the latter and the ram 1 is turned on. When lifting, the movable bath 2 with the housing 7 emerges from the fixed bath 10 with the coating, the end of the housing 7 comes in contact with the product 3, the springs 9 are compressed, and the mobile bath 2 during its movement applies a coating on the product 3, ensuring that it is applied only to the contacting with the coating material surface of the product. At the same time, the holes 17 fixed on the rod 6 of the power cylinder 1 move up to the distance h, the rods 19 are rotated on the axes 20 and set horizontally, tilt the upper ends of the wall elements 14 to the distance A and increase the diameter D of the fixed bath 10 to D and the bottom 11, fixed in the form of a diaphragm to the flange 13 of the rod 6, is bulging upward with ring corrugations 12. When this is poured into the gap between the casing 7 and the movable bath 2, the coating displaced from the movable bath 2 by article 3 falls on the winglets 8 with lugs 9 and the flange of the bottom of the bath 2 and splashes over the significantly increased surface area of the fixed bath mirror 10 at which the departure of spray beyond bath 10 and loss of coverage. The end of the coating process, the deflection of the elements 14 of the walls of the fixed bath 10 and the upward bulging of the annular corrugations 12 of the bottom 11 is determined by the end of the upward stroke of the piston of the power cylinder 1. After this, the power cylinder 1 is lowered and the movable bath 2 returns to its initial position with release of the springs 9 the casing 7, the lugs 17 are lowered at a distance h, the elements 14 of the walls contract to the center of the stationary bath with 10 tons 19 to form bath 10, in the upper part jpaBHofl diameter D, and the bottom 11 of the bath 10 corrugations 12 buckle down. At the same time, the buckling of the annular corrugations 12 in opposite directions and a short-term increase and decrease in the volume of the fixed bath 10 by deflecting the wall elements 14 from the center of the bath 10 contributes to the excitation of the coating material in the bath 10 and improving the mixing of the coating components with increasing sedimentation stability . The use of the proposed device can significantly reduce losses.

Claims (1)

Claim Device for coating by immersion on the surface of the product with a flange according to ed. St. No. 528125, characterized in that, in order to ensure a reduction in consumption and loss of coating material and to improve its mixing, the power cylinder for vertical movement of the movable bath is equipped with eyes secured to the rod and installed coaxially under the fixed bath, the bottom of which is made in the form of a diaphragm with annular corrugations fixed centrally on the ram cylinder, and the side walls are made of separate, provided with inner eyes lugs. elements connected to the bottom of the stationary v-ann and to each other by sheet elastic material, forming at the points of its attachment to adjacent loop elements, the eyelets of the elements being connected to about ¹⁰ ears of the ram cylinder.